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Finding the Fourth Proportional to 352,431.50, 486,354.25 and 191,286.55

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Solution

The fourth proportional to 352,431.50, 486,354.25 and 191,286.55 is: 263,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,431.50 : 486,354.25 = 191,286.55 : x
  2. Step 2: Convert to fraction form
    352,431.50/486,354.25 = 191,286.55/x
  3. Step 3: Cross multiply
    352,431.50x = 486,354.25 × 191,286.55
  4. Step 4: Simplify right side
    352,431.50x = 93,033,026,560.34
  5. Step 5: Solve for x
    x = 93,033,026,560.34/352,431.50
  6. Step 6: Final answer
    x = 263,974.78

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1.5x scale

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.