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Finding the Fourth Proportional to 424,132.77, 636,406.70 and 199,515.87

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Solution

The fourth proportional to 424,132.77, 636,406.70 and 199,515.87 is: 299,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,132.77 : 636,406.70 = 199,515.87 : x
  2. Step 2: Convert to fraction form
    424,132.77/636,406.70 = 199,515.87/x
  3. Step 3: Cross multiply
    424,132.77x = 636,406.70 × 199,515.87
  4. Step 4: Simplify right side
    424,132.77x = 126,973,235,426.75
  5. Step 5: Solve for x
    x = 126,973,235,426.75/424,132.77
  6. Step 6: Final answer
    x = 299,371.43

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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.