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Finding the Fourth Proportional to 206,854.80, 310,282.20 and 154,366.80

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Solution

The fourth proportional to 206,854.80, 310,282.20 and 154,366.80 is: 231,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,854.80 : 310,282.20 = 154,366.80 : x
  2. Step 2: Convert to fraction form
    206,854.80/310,282.20 = 154,366.80/x
  3. Step 3: Cross multiply
    206,854.80x = 310,282.20 × 154,366.80
  4. Step 4: Simplify right side
    206,854.80x = 47,897,270,310.96
  5. Step 5: Solve for x
    x = 47,897,270,310.96/206,854.80
  6. Step 6: Final answer
    x = 231,550.20

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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.