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Finding the Fourth Proportional to 439,274.88, 658,953.36 and 123,731.28

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Solution

The fourth proportional to 439,274.88, 658,953.36 and 123,731.28 is: 185,608.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,274.88 : 658,953.36 = 123,731.28 : x
  2. Step 2: Convert to fraction form
    439,274.88/658,953.36 = 123,731.28/x
  3. Step 3: Cross multiply
    439,274.88x = 658,953.36 × 123,731.28
  4. Step 4: Simplify right side
    439,274.88x = 81,533,142,693.10
  5. Step 5: Solve for x
    x = 81,533,142,693.10/439,274.88
  6. Step 6: Final answer
    x = 185,608.48

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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.