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Finding the Fourth Proportional to 330,877.32, 456,691.82 and 187,721.16

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Solution

The fourth proportional to 330,877.32, 456,691.82 and 187,721.16 is: 259,101.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,877.32 : 456,691.82 = 187,721.16 : x
  2. Step 2: Convert to fraction form
    330,877.32/456,691.82 = 187,721.16/x
  3. Step 3: Cross multiply
    330,877.32x = 456,691.82 × 187,721.16
  4. Step 4: Simplify right side
    330,877.32x = 85,730,717,274.31
  5. Step 5: Solve for x
    x = 85,730,717,274.31/330,877.32
  6. Step 6: Final answer
    x = 259,101.22

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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.