Home / 231,254.95-319,134.20-129,286.07

Finding the Fourth Proportional to 231,254.95, 319,134.20 and 129,286.07

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Solution

The fourth proportional to 231,254.95, 319,134.20 and 129,286.07 is: 178,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,254.95 : 319,134.20 = 129,286.07 : x
  2. Step 2: Convert to fraction form
    231,254.95/319,134.20 = 129,286.07/x
  3. Step 3: Cross multiply
    231,254.95x = 319,134.20 × 129,286.07
  4. Step 4: Simplify right side
    231,254.95x = 41,259,608,361.23
  5. Step 5: Solve for x
    x = 41,259,608,361.23/231,254.95
  6. Step 6: Final answer
    x = 178,416.11

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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.