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Finding the Fourth Proportional to 207,193.05, 310,718.91 and 80,823.33

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Solution

The fourth proportional to 207,193.05, 310,718.91 and 80,823.33 is: 121,207.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,193.05 : 310,718.91 = 80,823.33 : x
  2. Step 2: Convert to fraction form
    207,193.05/310,718.91 = 80,823.33/x
  3. Step 3: Cross multiply
    207,193.05x = 310,718.91 × 80,823.33
  4. Step 4: Simplify right side
    207,193.05x = 25,113,337,000.17
  5. Step 5: Solve for x
    x = 25,113,337,000.17/207,193.05
  6. Step 6: Final answer
    x = 121,207.43

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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.