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Finding the Fourth Proportional to 207,992.46, 287,029.61 and 112,499.15

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Solution

The fourth proportional to 207,992.46, 287,029.61 and 112,499.15 is: 155,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,992.46 : 287,029.61 = 112,499.15 : x
  2. Step 2: Convert to fraction form
    207,992.46/287,029.61 = 112,499.15/x
  3. Step 3: Cross multiply
    207,992.46x = 287,029.61 × 112,499.15
  4. Step 4: Simplify right side
    207,992.46x = 32,290,585,152.19
  5. Step 5: Solve for x
    x = 32,290,585,152.19/207,992.46
  6. Step 6: Final answer
    x = 155,248.83

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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.