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Finding the Fourth Proportional to 308,375.71, 425,689.63 and 187,555.80

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Solution

The fourth proportional to 308,375.71, 425,689.63 and 187,555.80 is: 258,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,375.71 : 425,689.63 = 187,555.80 : x
  2. Step 2: Convert to fraction form
    308,375.71/425,689.63 = 187,555.80/x
  3. Step 3: Cross multiply
    308,375.71x = 425,689.63 × 187,555.80
  4. Step 4: Simplify right side
    308,375.71x = 79,840,560,233.80
  5. Step 5: Solve for x
    x = 79,840,560,233.80/308,375.71
  6. Step 6: Final answer
    x = 258,906.78

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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.