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Finding the Fourth Proportional to 276,800.60, 415,200.90 and 89,812.10

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Solution

The fourth proportional to 276,800.60, 415,200.90 and 89,812.10 is: 134,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,800.60 : 415,200.90 = 89,812.10 : x
  2. Step 2: Convert to fraction form
    276,800.60/415,200.90 = 89,812.10/x
  3. Step 3: Cross multiply
    276,800.60x = 415,200.90 × 89,812.10
  4. Step 4: Simplify right side
    276,800.60x = 37,290,064,750.89
  5. Step 5: Solve for x
    x = 37,290,064,750.89/276,800.60
  6. Step 6: Final answer
    x = 134,718.15

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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.