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Finding the Fourth Proportional to 276,668.10, 415,002.15 and 156,601.80

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Solution

The fourth proportional to 276,668.10, 415,002.15 and 156,601.80 is: 234,902.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,668.10 : 415,002.15 = 156,601.80 : x
  2. Step 2: Convert to fraction form
    276,668.10/415,002.15 = 156,601.80/x
  3. Step 3: Cross multiply
    276,668.10x = 415,002.15 × 156,601.80
  4. Step 4: Simplify right side
    276,668.10x = 64,990,083,693.87
  5. Step 5: Solve for x
    x = 64,990,083,693.87/276,668.10
  6. Step 6: Final answer
    x = 234,902.70

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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.