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Finding the Fourth Proportional to 207,879.27, 286,873.42 and 112,385.94

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Solution

The fourth proportional to 207,879.27, 286,873.42 and 112,385.94 is: 155,092.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,879.27 : 286,873.42 = 112,385.94 : x
  2. Step 2: Convert to fraction form
    207,879.27/286,873.42 = 112,385.94/x
  3. Step 3: Cross multiply
    207,879.27x = 286,873.42 × 112,385.94
  4. Step 4: Simplify right side
    207,879.27x = 32,240,538,686.75
  5. Step 5: Solve for x
    x = 32,240,538,686.75/207,879.27
  6. Step 6: Final answer
    x = 155,092.61

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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.