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Finding the Fourth Proportional to 424,083.38, 636,123.44 and 108,539.78

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Solution

The fourth proportional to 424,083.38, 636,123.44 and 108,539.78 is: 162,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,083.38 : 636,123.44 = 108,539.78 : x
  2. Step 2: Convert to fraction form
    424,083.38/636,123.44 = 108,539.78/x
  3. Step 3: Cross multiply
    424,083.38x = 636,123.44 × 108,539.78
  4. Step 4: Simplify right side
    424,083.38x = 69,044,698,230.44
  5. Step 5: Solve for x
    x = 69,044,698,230.44/424,083.38
  6. Step 6: Final answer
    x = 162,809.25

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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.