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Finding the Fourth Proportional to 664,327.40, 996,491.10 and 243,548.60

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Solution

The fourth proportional to 664,327.40, 996,491.10 and 243,548.60 is: 365,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,327.40 : 996,491.10 = 243,548.60 : x
  2. Step 2: Convert to fraction form
    664,327.40/996,491.10 = 243,548.60/x
  3. Step 3: Cross multiply
    664,327.40x = 996,491.10 × 243,548.60
  4. Step 4: Simplify right side
    664,327.40x = 242,694,012,317.46
  5. Step 5: Solve for x
    x = 242,694,012,317.46/664,327.40
  6. Step 6: Final answer
    x = 365,322.90

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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.