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Finding the Fourth Proportional to 226,760.61, 312,942.57 and 129,980.57

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Solution

The fourth proportional to 226,760.61, 312,942.57 and 129,980.57 is: 179,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,760.61 : 312,942.57 = 129,980.57 : x
  2. Step 2: Convert to fraction form
    226,760.61/312,942.57 = 129,980.57/x
  3. Step 3: Cross multiply
    226,760.61x = 312,942.57 × 129,980.57
  4. Step 4: Simplify right side
    226,760.61x = 40,676,454,408.22
  5. Step 5: Solve for x
    x = 40,676,454,408.22/226,760.61
  6. Step 6: Final answer
    x = 179,380.60

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1.5x scale

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.