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Finding the Fourth Proportional to 185,344.80, 278,276.40 and 115,360.80

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Solution

The fourth proportional to 185,344.80, 278,276.40 and 115,360.80 is: 173,202.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,344.80 : 278,276.40 = 115,360.80 : x
  2. Step 2: Convert to fraction form
    185,344.80/278,276.40 = 115,360.80/x
  3. Step 3: Cross multiply
    185,344.80x = 278,276.40 × 115,360.80
  4. Step 4: Simplify right side
    185,344.80x = 32,102,188,125.12
  5. Step 5: Solve for x
    x = 32,102,188,125.12/185,344.80
  6. Step 6: Final answer
    x = 173,202.53

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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.