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Finding the Fourth Proportional to 231,881.20, 347,627.40 and 121,073.20

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Solution

The fourth proportional to 231,881.20, 347,627.40 and 121,073.20 is: 181,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,881.20 : 347,627.40 = 121,073.20 : x
  2. Step 2: Convert to fraction form
    231,881.20/347,627.40 = 121,073.20/x
  3. Step 3: Cross multiply
    231,881.20x = 347,627.40 × 121,073.20
  4. Step 4: Simplify right side
    231,881.20x = 42,088,361,725.68
  5. Step 5: Solve for x
    x = 42,088,361,725.68/231,881.20
  6. Step 6: Final answer
    x = 181,508.30

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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.