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Finding the Fourth Proportional to 221,102.80, 305,181.48 and 125,613.52

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Solution

The fourth proportional to 221,102.80, 305,181.48 and 125,613.52 is: 173,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,102.80 : 305,181.48 = 125,613.52 : x
  2. Step 2: Convert to fraction form
    221,102.80/305,181.48 = 125,613.52/x
  3. Step 3: Cross multiply
    221,102.80x = 305,181.48 × 125,613.52
  4. Step 4: Simplify right side
    221,102.80x = 38,334,919,941.61
  5. Step 5: Solve for x
    x = 38,334,919,941.61/221,102.80
  6. Step 6: Final answer
    x = 173,380.53

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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.