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Finding the Fourth Proportional to 254,028.57, 381,042.86 and 85,534.79

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Solution

The fourth proportional to 254,028.57, 381,042.86 and 85,534.79 is: 128,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,028.57 : 381,042.86 = 85,534.79 : x
  2. Step 2: Convert to fraction form
    254,028.57/381,042.86 = 85,534.79/x
  3. Step 3: Cross multiply
    254,028.57x = 381,042.86 × 85,534.79
  4. Step 4: Simplify right side
    254,028.57x = 32,592,419,844.66
  5. Step 5: Solve for x
    x = 32,592,419,844.66/254,028.57
  6. Step 6: Final answer
    x = 128,302.18

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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.