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Finding the Fourth Proportional to 424,028.92, 636,040.14 and 108,485.32

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Solution

The fourth proportional to 424,028.92, 636,040.14 and 108,485.32 is: 162,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,028.92 : 636,040.14 = 108,485.32 : x
  2. Step 2: Convert to fraction form
    424,028.92/636,040.14 = 108,485.32/x
  3. Step 3: Cross multiply
    424,028.92x = 636,040.14 × 108,485.32
  4. Step 4: Simplify right side
    424,028.92x = 69,001,018,120.74
  5. Step 5: Solve for x
    x = 69,001,018,120.74/424,028.92
  6. Step 6: Final answer
    x = 162,727.15

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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.