Home / 276,759.18-381,876.90-155,874.60

Finding the Fourth Proportional to 276,759.18, 381,876.90 and 155,874.60

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Solution

The fourth proportional to 276,759.18, 381,876.90 and 155,874.60 is: 215,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,759.18 : 381,876.90 = 155,874.60 : x
  2. Step 2: Convert to fraction form
    276,759.18/381,876.90 = 155,874.60/x
  3. Step 3: Cross multiply
    276,759.18x = 381,876.90 × 155,874.60
  4. Step 4: Simplify right side
    276,759.18x = 59,524,909,036.74
  5. Step 5: Solve for x
    x = 59,524,909,036.74/276,759.18
  6. Step 6: Final answer
    x = 215,078.35

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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.