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Finding the Fourth Proportional to 664,418.10, 996,627.15 and 243,639.30

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Solution

The fourth proportional to 664,418.10, 996,627.15 and 243,639.30 is: 365,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,418.10 : 996,627.15 = 243,639.30 : x
  2. Step 2: Convert to fraction form
    664,418.10/996,627.15 = 243,639.30/x
  3. Step 3: Cross multiply
    664,418.10x = 996,627.15 × 243,639.30
  4. Step 4: Simplify right side
    664,418.10x = 242,817,541,187.00
  5. Step 5: Solve for x
    x = 242,817,541,187.00/664,418.10
  6. Step 6: Final answer
    x = 365,458.95

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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.