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Finding the Fourth Proportional to 424,487.50, 636,731.24 and 108,944.40

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Solution

The fourth proportional to 424,487.50, 636,731.24 and 108,944.40 is: 163,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,487.50 : 636,731.24 = 108,944.40 : x
  2. Step 2: Convert to fraction form
    424,487.50/636,731.24 = 108,944.40/x
  3. Step 3: Cross multiply
    424,487.50x = 636,731.24 × 108,944.40
  4. Step 4: Simplify right side
    424,487.50x = 69,368,302,903.06
  5. Step 5: Solve for x
    x = 69,368,302,903.06/424,487.50
  6. Step 6: Final answer
    x = 163,416.60

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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.