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Finding the Fourth Proportional to 273,348.80, 410,080.80 and 86,379.20

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Solution

The fourth proportional to 273,348.80, 410,080.80 and 86,379.20 is: 129,587.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,348.80 : 410,080.80 = 86,379.20 : x
  2. Step 2: Convert to fraction form
    273,348.80/410,080.80 = 86,379.20/x
  3. Step 3: Cross multiply
    273,348.80x = 410,080.80 × 86,379.20
  4. Step 4: Simplify right side
    273,348.80x = 35,422,451,439.36
  5. Step 5: Solve for x
    x = 35,422,451,439.36/273,348.80
  6. Step 6: Final answer
    x = 129,587.00

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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.