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Finding the Fourth Proportional to 386,131.57, 579,191.13 and 119,892.34

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Solution

The fourth proportional to 386,131.57, 579,191.13 and 119,892.34 is: 179,836.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,131.57 : 579,191.13 = 119,892.34 : x
  2. Step 2: Convert to fraction form
    386,131.57/579,191.13 = 119,892.34/x
  3. Step 3: Cross multiply
    386,131.57x = 579,191.13 × 119,892.34
  4. Step 4: Simplify right side
    386,131.57x = 69,440,579,882.94
  5. Step 5: Solve for x
    x = 69,440,579,882.94/386,131.57
  6. Step 6: Final answer
    x = 179,836.58

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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.