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Finding the Fourth Proportional to 421,512.48, 632,363.49 and 221,926.86

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Solution

The fourth proportional to 421,512.48, 632,363.49 and 221,926.86 is: 332,940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,512.48 : 632,363.49 = 221,926.86 : x
  2. Step 2: Convert to fraction form
    421,512.48/632,363.49 = 221,926.86/x
  3. Step 3: Cross multiply
    421,512.48x = 632,363.49 × 221,926.86
  4. Step 4: Simplify right side
    421,512.48x = 140,338,443,714.34
  5. Step 5: Solve for x
    x = 140,338,443,714.34/421,512.48
  6. Step 6: Final answer
    x = 332,940.19

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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.