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Finding the Fourth Proportional to 547,101.62, 755,125.90 and 355,781.78

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Solution

The fourth proportional to 547,101.62, 755,125.90 and 355,781.78 is: 491,060.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,101.62 : 755,125.90 = 355,781.78 : x
  2. Step 2: Convert to fraction form
    547,101.62/755,125.90 = 355,781.78/x
  3. Step 3: Cross multiply
    547,101.62x = 755,125.90 × 355,781.78
  4. Step 4: Simplify right side
    547,101.62x = 268,660,036,826.10
  5. Step 5: Solve for x
    x = 268,660,036,826.10/547,101.62
  6. Step 6: Final answer
    x = 491,060.58

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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.