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Finding the Fourth Proportional to 561,679.88, 842,519.82 and 187,702.88

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Solution

The fourth proportional to 561,679.88, 842,519.82 and 187,702.88 is: 281,554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,679.88 : 842,519.82 = 187,702.88 : x
  2. Step 2: Convert to fraction form
    561,679.88/842,519.82 = 187,702.88/x
  3. Step 3: Cross multiply
    561,679.88x = 842,519.82 × 187,702.88
  4. Step 4: Simplify right side
    561,679.88x = 158,143,396,671.08
  5. Step 5: Solve for x
    x = 158,143,396,671.08/561,679.88
  6. Step 6: Final answer
    x = 281,554.32

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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.