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Finding the Fourth Proportional to 354,696.20, 532,044.30 and 221,726.60

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Solution

The fourth proportional to 354,696.20, 532,044.30 and 221,726.60 is: 332,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,696.20 : 532,044.30 = 221,726.60 : x
  2. Step 2: Convert to fraction form
    354,696.20/532,044.30 = 221,726.60/x
  3. Step 3: Cross multiply
    354,696.20x = 532,044.30 × 221,726.60
  4. Step 4: Simplify right side
    354,696.20x = 117,968,373,688.38
  5. Step 5: Solve for x
    x = 117,968,373,688.38/354,696.20
  6. Step 6: Final answer
    x = 332,589.90

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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.