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Finding the Fourth Proportional to 276,801.10, 415,201.65 and 89,812.60

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Solution

The fourth proportional to 276,801.10, 415,201.65 and 89,812.60 is: 134,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,801.10 : 415,201.65 = 89,812.60 : x
  2. Step 2: Convert to fraction form
    276,801.10/415,201.65 = 89,812.60/x
  3. Step 3: Cross multiply
    276,801.10x = 415,201.65 × 89,812.60
  4. Step 4: Simplify right side
    276,801.10x = 37,290,339,710.79
  5. Step 5: Solve for x
    x = 37,290,339,710.79/276,801.10
  6. Step 6: Final answer
    x = 134,718.90

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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.