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Finding the Fourth Proportional to 498,751.97, 688,276.62 and 272,397.47

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Solution

The fourth proportional to 498,751.97, 688,276.62 and 272,397.47 is: 375,907.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,751.97 : 688,276.62 = 272,397.47 : x
  2. Step 2: Convert to fraction form
    498,751.97/688,276.62 = 272,397.47/x
  3. Step 3: Cross multiply
    498,751.97x = 688,276.62 × 272,397.47
  4. Step 4: Simplify right side
    498,751.97x = 187,484,806,506.77
  5. Step 5: Solve for x
    x = 187,484,806,506.77/498,751.97
  6. Step 6: Final answer
    x = 375,907.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.