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Finding the Fourth Proportional to 424,491.28, 636,517.77 and 124,932.94

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Solution

The fourth proportional to 424,491.28, 636,517.77 and 124,932.94 is: 187,334.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,491.28 : 636,517.77 = 124,932.94 : x
  2. Step 2: Convert to fraction form
    424,491.28/636,517.77 = 124,932.94/x
  3. Step 3: Cross multiply
    424,491.28x = 636,517.77 × 124,932.94
  4. Step 4: Simplify right side
    424,491.28x = 79,522,036,368.34
  5. Step 5: Solve for x
    x = 79,522,036,368.34/424,491.28
  6. Step 6: Final answer
    x = 187,334.91

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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.