Home / 252,351.45-378,565.07-81,516.11

Finding the Fourth Proportional to 252,351.45, 378,565.07 and 81,516.11

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Solution

The fourth proportional to 252,351.45, 378,565.07 and 81,516.11 is: 122,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,351.45 : 378,565.07 = 81,516.11 : x
  2. Step 2: Convert to fraction form
    252,351.45/378,565.07 = 81,516.11/x
  3. Step 3: Cross multiply
    252,351.45x = 378,565.07 × 81,516.11
  4. Step 4: Simplify right side
    252,351.45x = 30,859,149,587.87
  5. Step 5: Solve for x
    x = 30,859,149,587.87/252,351.45
  6. Step 6: Final answer
    x = 122,286.40

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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.