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Finding the Fourth Proportional to 356,512.25, 534,769.59 and 90,272.64

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Solution

The fourth proportional to 356,512.25, 534,769.59 and 90,272.64 is: 135,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,512.25 : 534,769.59 = 90,272.64 : x
  2. Step 2: Convert to fraction form
    356,512.25/534,769.59 = 90,272.64/x
  3. Step 3: Cross multiply
    356,512.25x = 534,769.59 × 90,272.64
  4. Step 4: Simplify right side
    356,512.25x = 48,275,062,229.65
  5. Step 5: Solve for x
    x = 48,275,062,229.65/356,512.25
  6. Step 6: Final answer
    x = 135,409.27

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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.