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Finding the Fourth Proportional to 202,869.27, 279,957.20 and 112,218.12

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Solution

The fourth proportional to 202,869.27, 279,957.20 and 112,218.12 is: 154,859.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,869.27 : 279,957.20 = 112,218.12 : x
  2. Step 2: Convert to fraction form
    202,869.27/279,957.20 = 112,218.12/x
  3. Step 3: Cross multiply
    202,869.27x = 279,957.20 × 112,218.12
  4. Step 4: Simplify right side
    202,869.27x = 31,416,270,103.37
  5. Step 5: Solve for x
    x = 31,416,270,103.37/202,869.27
  6. Step 6: Final answer
    x = 154,859.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.