Home / 257,712.33-386,475.86-89,186.92

Finding the Fourth Proportional to 257,712.33, 386,475.86 and 89,186.92

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Solution

The fourth proportional to 257,712.33, 386,475.86 and 89,186.92 is: 133,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,712.33 : 386,475.86 = 89,186.92 : x
  2. Step 2: Convert to fraction form
    257,712.33/386,475.86 = 89,186.92/x
  3. Step 3: Cross multiply
    257,712.33x = 386,475.86 × 89,186.92
  4. Step 4: Simplify right side
    257,712.33x = 34,468,592,536.78
  5. Step 5: Solve for x
    x = 34,468,592,536.78/257,712.33
  6. Step 6: Final answer
    x = 133,748.32

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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.