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Finding the Fourth Proportional to 392,652.13, 588,978.20 and 112,169.38

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Solution

The fourth proportional to 392,652.13, 588,978.20 and 112,169.38 is: 168,254.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,652.13 : 588,978.20 = 112,169.38 : x
  2. Step 2: Convert to fraction form
    392,652.13/588,978.20 = 112,169.38/x
  3. Step 3: Cross multiply
    392,652.13x = 588,978.20 × 112,169.38
  4. Step 4: Simplify right side
    392,652.13x = 66,065,318,808.88
  5. Step 5: Solve for x
    x = 66,065,318,808.88/392,652.13
  6. Step 6: Final answer
    x = 168,254.07

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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.