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Finding the Fourth Proportional to 207,274, 311,009.40 and 88,979.20

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Solution

The fourth proportional to 207,274, 311,009.40 and 88,979.20 is: 133,511.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,274 : 311,009.40 = 88,979.20 : x
  2. Step 2: Convert to fraction form
    207,274/311,009.40 = 88,979.20/x
  3. Step 3: Cross multiply
    207,274x = 311,009.40 × 88,979.20
  4. Step 4: Simplify right side
    207,274x = 27,673,367,604.48
  5. Step 5: Solve for x
    x = 27,673,367,604.48/207,274
  6. Step 6: Final answer
    x = 133,511.04

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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.