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Finding the Fourth Proportional to 392,290.29, 588,435.44 and 111,800.25

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Solution

The fourth proportional to 392,290.29, 588,435.44 and 111,800.25 is: 167,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,290.29 : 588,435.44 = 111,800.25 : x
  2. Step 2: Convert to fraction form
    392,290.29/588,435.44 = 111,800.25/x
  3. Step 3: Cross multiply
    392,290.29x = 588,435.44 × 111,800.25
  4. Step 4: Simplify right side
    392,290.29x = 65,787,228,741.86
  5. Step 5: Solve for x
    x = 65,787,228,741.86/392,290.29
  6. Step 6: Final answer
    x = 167,700.38

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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.