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Finding the Fourth Proportional to 561,679.38, 842,519.07 and 187,702.38

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Solution

The fourth proportional to 561,679.38, 842,519.07 and 187,702.38 is: 281,553.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,679.38 : 842,519.07 = 187,702.38 : x
  2. Step 2: Convert to fraction form
    561,679.38/842,519.07 = 187,702.38/x
  3. Step 3: Cross multiply
    561,679.38x = 842,519.07 × 187,702.38
  4. Step 4: Simplify right side
    561,679.38x = 158,142,834,634.39
  5. Step 5: Solve for x
    x = 158,142,834,634.39/561,679.38
  6. Step 6: Final answer
    x = 281,553.57

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Similar ratio
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1.5x scale

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.