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Finding the Fourth Proportional to 254,745.68, 382,134.78 and 86,242.73

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Solution

The fourth proportional to 254,745.68, 382,134.78 and 86,242.73 is: 129,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,745.68 : 382,134.78 = 86,242.73 : x
  2. Step 2: Convert to fraction form
    254,745.68/382,134.78 = 86,242.73/x
  3. Step 3: Cross multiply
    254,745.68x = 382,134.78 × 86,242.73
  4. Step 4: Simplify right side
    254,745.68x = 32,956,344,744.48
  5. Step 5: Solve for x
    x = 32,956,344,744.48/254,745.68
  6. Step 6: Final answer
    x = 129,369.59

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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.