Home / 231,404.45-319,340.49-135,912.74

Finding the Fourth Proportional to 231,404.45, 319,340.49 and 135,912.74

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Solution

The fourth proportional to 231,404.45, 319,340.49 and 135,912.74 is: 187,560.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,404.45 : 319,340.49 = 135,912.74 : x
  2. Step 2: Convert to fraction form
    231,404.45/319,340.49 = 135,912.74/x
  3. Step 3: Cross multiply
    231,404.45x = 319,340.49 × 135,912.74
  4. Step 4: Simplify right side
    231,404.45x = 43,402,440,988.84
  5. Step 5: Solve for x
    x = 43,402,440,988.84/231,404.45
  6. Step 6: Final answer
    x = 187,560.96

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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.