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Finding the Fourth Proportional to 253,659.87, 380,548.12 and 76,170.24

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Solution

The fourth proportional to 253,659.87, 380,548.12 and 76,170.24 is: 114,272.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,659.87 : 380,548.12 = 76,170.24 : x
  2. Step 2: Convert to fraction form
    253,659.87/380,548.12 = 76,170.24/x
  3. Step 3: Cross multiply
    253,659.87x = 380,548.12 × 76,170.24
  4. Step 4: Simplify right side
    253,659.87x = 28,986,441,441.52
  5. Step 5: Solve for x
    x = 28,986,441,441.52/253,659.87
  6. Step 6: Final answer
    x = 114,272.87

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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.