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Finding the Fourth Proportional to 276,672.20, 415,397.10 and 171,696.20

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Solution

The fourth proportional to 276,672.20, 415,397.10 and 171,696.20 is: 257,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,672.20 : 415,397.10 = 171,696.20 : x
  2. Step 2: Convert to fraction form
    276,672.20/415,397.10 = 171,696.20/x
  3. Step 3: Cross multiply
    276,672.20x = 415,397.10 × 171,696.20
  4. Step 4: Simplify right side
    276,672.20x = 71,322,103,561.02
  5. Step 5: Solve for x
    x = 71,322,103,561.02/276,672.20
  6. Step 6: Final answer
    x = 257,785.58

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1.5x scale

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.