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Finding the Fourth Proportional to 221,344.42, 305,469.72 and 125,860

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Solution

The fourth proportional to 221,344.42, 305,469.72 and 125,860 is: 173,695.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,344.42 : 305,469.72 = 125,860 : x
  2. Step 2: Convert to fraction form
    221,344.42/305,469.72 = 125,860/x
  3. Step 3: Cross multiply
    221,344.42x = 305,469.72 × 125,860
  4. Step 4: Simplify right side
    221,344.42x = 38,446,418,959.20
  5. Step 5: Solve for x
    x = 38,446,418,959.20/221,344.42
  6. Step 6: Final answer
    x = 173,695.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.