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Finding the Fourth Proportional to 398,757.88, 598,385.80 and 265,731.48

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Solution

The fourth proportional to 398,757.88, 598,385.80 and 265,731.48 is: 398,763.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,757.88 : 598,385.80 = 265,731.48 : x
  2. Step 2: Convert to fraction form
    398,757.88/598,385.80 = 265,731.48/x
  3. Step 3: Cross multiply
    398,757.88x = 598,385.80 × 265,731.48
  4. Step 4: Simplify right side
    398,757.88x = 159,009,944,244.98
  5. Step 5: Solve for x
    x = 159,009,944,244.98/398,757.88
  6. Step 6: Final answer
    x = 398,763.14

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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.