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Finding the Fourth Proportional to 352,780.38, 486,818.51 and 191,635.20

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Solution

The fourth proportional to 352,780.38, 486,818.51 and 191,635.20 is: 264,446.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,780.38 : 486,818.51 = 191,635.20 : x
  2. Step 2: Convert to fraction form
    352,780.38/486,818.51 = 191,635.20/x
  3. Step 3: Cross multiply
    352,780.38x = 486,818.51 × 191,635.20
  4. Step 4: Simplify right side
    352,780.38x = 93,291,561,569.38
  5. Step 5: Solve for x
    x = 93,291,561,569.38/352,780.38
  6. Step 6: Final answer
    x = 264,446.57

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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.