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Finding the Fourth Proportional to 373,680, 515,911.68 and 239,777.28

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Solution

The fourth proportional to 373,680, 515,911.68 and 239,777.28 is: 331,042.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,680 : 515,911.68 = 239,777.28 : x
  2. Step 2: Convert to fraction form
    373,680/515,911.68 = 239,777.28/x
  3. Step 3: Cross multiply
    373,680x = 515,911.68 × 239,777.28
  4. Step 4: Simplify right side
    373,680x = 123,703,899,350.63
  5. Step 5: Solve for x
    x = 123,703,899,350.63/373,680
  6. Step 6: Final answer
    x = 331,042.33

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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.