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Finding the Fourth Proportional to 253,715.52, 380,544.12 and 85,229.04

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Solution

The fourth proportional to 253,715.52, 380,544.12 and 85,229.04 is: 127,833.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,715.52 : 380,544.12 = 85,229.04 : x
  2. Step 2: Convert to fraction form
    253,715.52/380,544.12 = 85,229.04/x
  3. Step 3: Cross multiply
    253,715.52x = 380,544.12 × 85,229.04
  4. Step 4: Simplify right side
    253,715.52x = 32,433,410,025.24
  5. Step 5: Solve for x
    x = 32,433,410,025.24/253,715.52
  6. Step 6: Final answer
    x = 127,833.76

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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.