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Finding the Fourth Proportional to 254,170.98, 380,990.43 and 85,633.07

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Solution

The fourth proportional to 254,170.98, 380,990.43 and 85,633.07 is: 128,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,170.98 : 380,990.43 = 85,633.07 : x
  2. Step 2: Convert to fraction form
    254,170.98/380,990.43 = 85,633.07/x
  3. Step 3: Cross multiply
    254,170.98x = 380,990.43 × 85,633.07
  4. Step 4: Simplify right side
    254,170.98x = 32,625,378,256.57
  5. Step 5: Solve for x
    x = 32,625,378,256.57/254,170.98
  6. Step 6: Final answer
    x = 128,359.97

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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.