Home / 254,171.12-380,990.65-85,633.22

Finding the Fourth Proportional to 254,171.12, 380,990.65 and 85,633.22

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Solution

The fourth proportional to 254,171.12, 380,990.65 and 85,633.22 is: 128,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,171.12 : 380,990.65 = 85,633.22 : x
  2. Step 2: Convert to fraction form
    254,171.12/380,990.65 = 85,633.22/x
  3. Step 3: Cross multiply
    254,171.12x = 380,990.65 × 85,633.22
  4. Step 4: Simplify right side
    254,171.12x = 32,625,456,149.39
  5. Step 5: Solve for x
    x = 32,625,456,149.39/254,171.12
  6. Step 6: Final answer
    x = 128,360.20

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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.