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Finding the Fourth Proportional to 221,503.44, 305,664.12 and 126,001.20

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Solution

The fourth proportional to 221,503.44, 305,664.12 and 126,001.20 is: 173,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,503.44 : 305,664.12 = 126,001.20 : x
  2. Step 2: Convert to fraction form
    221,503.44/305,664.12 = 126,001.20/x
  3. Step 3: Cross multiply
    221,503.44x = 305,664.12 × 126,001.20
  4. Step 4: Simplify right side
    221,503.44x = 38,514,045,916.94
  5. Step 5: Solve for x
    x = 38,514,045,916.94/221,503.44
  6. Step 6: Final answer
    x = 173,875.61

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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.