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Finding the Fourth Proportional to 354,671.20, 532,006.80 and 221,960.80

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Solution

The fourth proportional to 354,671.20, 532,006.80 and 221,960.80 is: 332,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,671.20 : 532,006.80 = 221,960.80 : x
  2. Step 2: Convert to fraction form
    354,671.20/532,006.80 = 221,960.80/x
  3. Step 3: Cross multiply
    354,671.20x = 532,006.80 × 221,960.80
  4. Step 4: Simplify right side
    354,671.20x = 118,084,654,933.44
  5. Step 5: Solve for x
    x = 118,084,654,933.44/354,671.20
  6. Step 6: Final answer
    x = 332,941.20

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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.