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Finding the Fourth Proportional to 260,647.38, 391,028.38 and 148,380.17

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Solution

The fourth proportional to 260,647.38, 391,028.38 and 148,380.17 is: 222,602.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,647.38 : 391,028.38 = 148,380.17 : x
  2. Step 2: Convert to fraction form
    260,647.38/391,028.38 = 148,380.17/x
  3. Step 3: Cross multiply
    260,647.38x = 391,028.38 × 148,380.17
  4. Step 4: Simplify right side
    260,647.38x = 58,020,856,892.60
  5. Step 5: Solve for x
    x = 58,020,856,892.60/260,647.38
  6. Step 6: Final answer
    x = 222,602.88

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1.5x scale

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.