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Finding the Fourth Proportional to 375,412.98, 517,654.77 and 239,231.21

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Solution

The fourth proportional to 375,412.98, 517,654.77 and 239,231.21 is: 329,874.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,412.98 : 517,654.77 = 239,231.21 : x
  2. Step 2: Convert to fraction form
    375,412.98/517,654.77 = 239,231.21/x
  3. Step 3: Cross multiply
    375,412.98x = 517,654.77 × 239,231.21
  4. Step 4: Simplify right side
    375,412.98x = 123,839,174,401.10
  5. Step 5: Solve for x
    x = 123,839,174,401.10/375,412.98
  6. Step 6: Final answer
    x = 329,874.51

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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.