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Finding the Fourth Proportional to 250,142.16, 375,218.78 and 90,230.88

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Solution

The fourth proportional to 250,142.16, 375,218.78 and 90,230.88 is: 135,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,142.16 : 375,218.78 = 90,230.88 : x
  2. Step 2: Convert to fraction form
    250,142.16/375,218.78 = 90,230.88/x
  3. Step 3: Cross multiply
    250,142.16x = 375,218.78 × 90,230.88
  4. Step 4: Simplify right side
    250,142.16x = 33,856,320,260.77
  5. Step 5: Solve for x
    x = 33,856,320,260.77/250,142.16
  6. Step 6: Final answer
    x = 135,348.32

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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.