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Finding the Fourth Proportional to 253,832.59, 380,754.33 and 85,358.26

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Solution

The fourth proportional to 253,832.59, 380,754.33 and 85,358.26 is: 128,039.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,832.59 : 380,754.33 = 85,358.26 : x
  2. Step 2: Convert to fraction form
    253,832.59/380,754.33 = 85,358.26/x
  3. Step 3: Cross multiply
    253,832.59x = 380,754.33 × 85,358.26
  4. Step 4: Simplify right side
    253,832.59x = 32,500,527,096.27
  5. Step 5: Solve for x
    x = 32,500,527,096.27/253,832.59
  6. Step 6: Final answer
    x = 128,039.22

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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.