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Finding the Fourth Proportional to 345,505.38, 518,331.87 and 120,873.14

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Solution

The fourth proportional to 345,505.38, 518,331.87 and 120,873.14 is: 181,335.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,505.38 : 518,331.87 = 120,873.14 : x
  2. Step 2: Convert to fraction form
    345,505.38/518,331.87 = 120,873.14/x
  3. Step 3: Cross multiply
    345,505.38x = 518,331.87 × 120,873.14
  4. Step 4: Simplify right side
    345,505.38x = 62,652,398,097.31
  5. Step 5: Solve for x
    x = 62,652,398,097.31/345,505.38
  6. Step 6: Final answer
    x = 181,335.52

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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.