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Finding the Fourth Proportional to 276,690.60, 415,035.90 and 89,702.10

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Solution

The fourth proportional to 276,690.60, 415,035.90 and 89,702.10 is: 134,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,690.60 : 415,035.90 = 89,702.10 : x
  2. Step 2: Convert to fraction form
    276,690.60/415,035.90 = 89,702.10/x
  3. Step 3: Cross multiply
    276,690.60x = 415,035.90 × 89,702.10
  4. Step 4: Simplify right side
    276,690.60x = 37,229,591,805.39
  5. Step 5: Solve for x
    x = 37,229,591,805.39/276,690.60
  6. Step 6: Final answer
    x = 134,553.15

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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.