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Finding the Fourth Proportional to 259,099.80, 389,232.90 and 252,101.40

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Solution

The fourth proportional to 259,099.80, 389,232.90 and 252,101.40 is: 378,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,099.80 : 389,232.90 = 252,101.40 : x
  2. Step 2: Convert to fraction form
    259,099.80/389,232.90 = 252,101.40/x
  3. Step 3: Cross multiply
    259,099.80x = 389,232.90 × 252,101.40
  4. Step 4: Simplify right side
    259,099.80x = 98,126,159,016.06
  5. Step 5: Solve for x
    x = 98,126,159,016.06/259,099.80
  6. Step 6: Final answer
    x = 378,719.55

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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.