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Finding the Fourth Proportional to 276,881.20, 415,321.80 and 89,892.70

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Solution

The fourth proportional to 276,881.20, 415,321.80 and 89,892.70 is: 134,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,881.20 : 415,321.80 = 89,892.70 : x
  2. Step 2: Convert to fraction form
    276,881.20/415,321.80 = 89,892.70/x
  3. Step 3: Cross multiply
    276,881.20x = 415,321.80 × 89,892.70
  4. Step 4: Simplify right side
    276,881.20x = 37,334,397,970.86
  5. Step 5: Solve for x
    x = 37,334,397,970.86/276,881.20
  6. Step 6: Final answer
    x = 134,839.05

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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.