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Finding the Fourth Proportional to 664,309.10, 996,463.65 and 243,530.30

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Solution

The fourth proportional to 664,309.10, 996,463.65 and 243,530.30 is: 365,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,309.10 : 996,463.65 = 243,530.30 : x
  2. Step 2: Convert to fraction form
    664,309.10/996,463.65 = 243,530.30/x
  3. Step 3: Cross multiply
    664,309.10x = 996,463.65 × 243,530.30
  4. Step 4: Simplify right side
    664,309.10x = 242,669,091,623.60
  5. Step 5: Solve for x
    x = 242,669,091,623.60/664,309.10
  6. Step 6: Final answer
    x = 365,295.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.