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Finding the Fourth Proportional to 231,601.80, 319,616.22 and 129,626.44

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Solution

The fourth proportional to 231,601.80, 319,616.22 and 129,626.44 is: 178,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,601.80 : 319,616.22 = 129,626.44 : x
  2. Step 2: Convert to fraction form
    231,601.80/319,616.22 = 129,626.44/x
  3. Step 3: Cross multiply
    231,601.80x = 319,616.22 × 129,626.44
  4. Step 4: Simplify right side
    231,601.80x = 41,430,712,764.86
  5. Step 5: Solve for x
    x = 41,430,712,764.86/231,601.80
  6. Step 6: Final answer
    x = 178,887.70

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1.5x scale

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.