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Finding the Fourth Proportional to 216,067.40, 323,517.90 and 169,411.40

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Solution

The fourth proportional to 216,067.40, 323,517.90 and 169,411.40 is: 253,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,067.40 : 323,517.90 = 169,411.40 : x
  2. Step 2: Convert to fraction form
    216,067.40/323,517.90 = 169,411.40/x
  3. Step 3: Cross multiply
    216,067.40x = 323,517.90 × 169,411.40
  4. Step 4: Simplify right side
    216,067.40x = 54,807,620,364.06
  5. Step 5: Solve for x
    x = 54,807,620,364.06/216,067.40
  6. Step 6: Final answer
    x = 253,659.83

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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.