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Finding the Fourth Proportional to 424,137.84, 636,073.56 and 124,543.68

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Solution

The fourth proportional to 424,137.84, 636,073.56 and 124,543.68 is: 186,776.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,137.84 : 636,073.56 = 124,543.68 : x
  2. Step 2: Convert to fraction form
    424,137.84/636,073.56 = 124,543.68/x
  3. Step 3: Cross multiply
    424,137.84x = 636,073.56 × 124,543.68
  4. Step 4: Simplify right side
    424,137.84x = 79,218,941,913.10
  5. Step 5: Solve for x
    x = 79,218,941,913.10/424,137.84
  6. Step 6: Final answer
    x = 186,776.41

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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.