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Finding the Fourth Proportional to 276,689.60, 415,034.40 and 156,623.30

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Solution

The fourth proportional to 276,689.60, 415,034.40 and 156,623.30 is: 234,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,689.60 : 415,034.40 = 156,623.30 : x
  2. Step 2: Convert to fraction form
    276,689.60/415,034.40 = 156,623.30/x
  3. Step 3: Cross multiply
    276,689.60x = 415,034.40 × 156,623.30
  4. Step 4: Simplify right side
    276,689.60x = 65,004,057,341.52
  5. Step 5: Solve for x
    x = 65,004,057,341.52/276,689.60
  6. Step 6: Final answer
    x = 234,934.95

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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.