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Finding the Fourth Proportional to 424,270.68, 636,316.52 and 124,669.91

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Solution

The fourth proportional to 424,270.68, 636,316.52 and 124,669.91 is: 186,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,270.68 : 636,316.52 = 124,669.91 : x
  2. Step 2: Convert to fraction form
    424,270.68/636,316.52 = 124,669.91/x
  3. Step 3: Cross multiply
    424,270.68x = 636,316.52 × 124,669.91
  4. Step 4: Simplify right side
    424,270.68x = 79,329,519,474.98
  5. Step 5: Solve for x
    x = 79,329,519,474.98/424,270.68
  6. Step 6: Final answer
    x = 186,978.56

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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.