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Finding the Fourth Proportional to 276,419.20, 414,628.80 and 89,449.60

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Solution

The fourth proportional to 276,419.20, 414,628.80 and 89,449.60 is: 134,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,419.20 : 414,628.80 = 89,449.60 : x
  2. Step 2: Convert to fraction form
    276,419.20/414,628.80 = 89,449.60/x
  3. Step 3: Cross multiply
    276,419.20x = 414,628.80 × 89,449.60
  4. Step 4: Simplify right side
    276,419.20x = 37,088,380,308.48
  5. Step 5: Solve for x
    x = 37,088,380,308.48/276,419.20
  6. Step 6: Final answer
    x = 134,174.40

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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.