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Finding the Fourth Proportional to 664,430.10, 996,645.15 and 243,651.30

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Solution

The fourth proportional to 664,430.10, 996,645.15 and 243,651.30 is: 365,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,430.10 : 996,645.15 = 243,651.30 : x
  2. Step 2: Convert to fraction form
    664,430.10/996,645.15 = 243,651.30/x
  3. Step 3: Cross multiply
    664,430.10x = 996,645.15 × 243,651.30
  4. Step 4: Simplify right side
    664,430.10x = 242,833,886,436.20
  5. Step 5: Solve for x
    x = 242,833,886,436.20/664,430.10
  6. Step 6: Final answer
    x = 365,476.95

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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.