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Finding the Fourth Proportional to 352,869.80, 486,951.90 and 191,721.20

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Solution

The fourth proportional to 352,869.80, 486,951.90 and 191,721.20 is: 264,570.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,869.80 : 486,951.90 = 191,721.20 : x
  2. Step 2: Convert to fraction form
    352,869.80/486,951.90 = 191,721.20/x
  3. Step 3: Cross multiply
    352,869.80x = 486,951.90 × 191,721.20
  4. Step 4: Simplify right side
    352,869.80x = 93,359,002,610.28
  5. Step 5: Solve for x
    x = 93,359,002,610.28/352,869.80
  6. Step 6: Final answer
    x = 264,570.68

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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.