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Finding the Fourth Proportional to 221,042.56, 305,029.20 and 125,548.96

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Solution

The fourth proportional to 221,042.56, 305,029.20 and 125,548.96 is: 173,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,042.56 : 305,029.20 = 125,548.96 : x
  2. Step 2: Convert to fraction form
    221,042.56/305,029.20 = 125,548.96/x
  3. Step 3: Cross multiply
    221,042.56x = 305,029.20 × 125,548.96
  4. Step 4: Simplify right side
    221,042.56x = 38,296,098,829.63
  5. Step 5: Solve for x
    x = 38,296,098,829.63/221,042.56
  6. Step 6: Final answer
    x = 173,252.15

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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.