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Finding the Fourth Proportional to 424,253.79, 636,380.48 and 124,736.85

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Solution

The fourth proportional to 424,253.79, 636,380.48 and 124,736.85 is: 187,105.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,253.79 : 636,380.48 = 124,736.85 : x
  2. Step 2: Convert to fraction form
    424,253.79/636,380.48 = 124,736.85/x
  3. Step 3: Cross multiply
    424,253.79x = 636,380.48 × 124,736.85
  4. Step 4: Simplify right side
    424,253.79x = 79,380,095,853.00
  5. Step 5: Solve for x
    x = 79,380,095,853.00/424,253.79
  6. Step 6: Final answer
    x = 187,105.21

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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.