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Finding the Fourth Proportional to 231,652.08, 319,645.86 and 129,672.24

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Solution

The fourth proportional to 231,652.08, 319,645.86 and 129,672.24 is: 178,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,652.08 : 319,645.86 = 129,672.24 : x
  2. Step 2: Convert to fraction form
    231,652.08/319,645.86 = 129,672.24/x
  3. Step 3: Cross multiply
    231,652.08x = 319,645.86 × 129,672.24
  4. Step 4: Simplify right side
    231,652.08x = 41,449,194,672.93
  5. Step 5: Solve for x
    x = 41,449,194,672.93/231,652.08
  6. Step 6: Final answer
    x = 178,928.65

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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.