Home / 256,645.62-384,964.19-76,731.46

Finding the Fourth Proportional to 256,645.62, 384,964.19 and 76,731.46

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Solution

The fourth proportional to 256,645.62, 384,964.19 and 76,731.46 is: 115,095.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,645.62 : 384,964.19 = 76,731.46 : x
  2. Step 2: Convert to fraction form
    256,645.62/384,964.19 = 76,731.46/x
  3. Step 3: Cross multiply
    256,645.62x = 384,964.19 × 76,731.46
  4. Step 4: Simplify right side
    256,645.62x = 29,538,864,346.42
  5. Step 5: Solve for x
    x = 29,538,864,346.42/256,645.62
  6. Step 6: Final answer
    x = 115,095.92

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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.