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Finding the Fourth Proportional to 308,386.17, 425,589.15 and 187,507.44

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Solution

The fourth proportional to 308,386.17, 425,589.15 and 187,507.44 is: 258,770.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,386.17 : 425,589.15 = 187,507.44 : x
  2. Step 2: Convert to fraction form
    308,386.17/425,589.15 = 187,507.44/x
  3. Step 3: Cross multiply
    308,386.17x = 425,589.15 × 187,507.44
  4. Step 4: Simplify right side
    308,386.17x = 79,801,132,008.28
  5. Step 5: Solve for x
    x = 79,801,132,008.28/308,386.17
  6. Step 6: Final answer
    x = 258,770.14

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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.