Home / 254,249.75-381,429.30-85,774.25

Finding the Fourth Proportional to 254,249.75, 381,429.30 and 85,774.25

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Solution

The fourth proportional to 254,249.75, 381,429.30 and 85,774.25 is: 128,679.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,249.75 : 381,429.30 = 85,774.25 : x
  2. Step 2: Convert to fraction form
    254,249.75/381,429.30 = 85,774.25/x
  3. Step 3: Cross multiply
    254,249.75x = 381,429.30 × 85,774.25
  4. Step 4: Simplify right side
    254,249.75x = 32,716,812,135.53
  5. Step 5: Solve for x
    x = 32,716,812,135.53/254,249.75
  6. Step 6: Final answer
    x = 128,679.82

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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.