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Finding the Fourth Proportional to 185,323.80, 278,115.30 and 80,218.20

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Solution

The fourth proportional to 185,323.80, 278,115.30 and 80,218.20 is: 120,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,323.80 : 278,115.30 = 80,218.20 : x
  2. Step 2: Convert to fraction form
    185,323.80/278,115.30 = 80,218.20/x
  3. Step 3: Cross multiply
    185,323.80x = 278,115.30 × 80,218.20
  4. Step 4: Simplify right side
    185,323.80x = 22,309,908,758.46
  5. Step 5: Solve for x
    x = 22,309,908,758.46/185,323.80
  6. Step 6: Final answer
    x = 120,383.40

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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.