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Finding the Fourth Proportional to 498,751.70, 688,277.25 and 272,397.20

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Solution

The fourth proportional to 498,751.70, 688,277.25 and 272,397.20 is: 375,908.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,751.70 : 688,277.25 = 272,397.20 : x
  2. Step 2: Convert to fraction form
    498,751.70/688,277.25 = 272,397.20/x
  3. Step 3: Cross multiply
    498,751.70x = 688,277.25 × 272,397.20
  4. Step 4: Simplify right side
    498,751.70x = 187,484,792,282.31
  5. Step 5: Solve for x
    x = 187,484,792,282.31/498,751.70
  6. Step 6: Final answer
    x = 375,908.08

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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.