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Finding the Fourth Proportional to 226,708.89, 312,860.91 and 129,910.83

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Solution

The fourth proportional to 226,708.89, 312,860.91 and 129,910.83 is: 179,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,708.89 : 312,860.91 = 129,910.83 : x
  2. Step 2: Convert to fraction form
    226,708.89/312,860.91 = 129,910.83/x
  3. Step 3: Cross multiply
    226,708.89x = 312,860.91 × 129,910.83
  4. Step 4: Simplify right side
    226,708.89x = 40,644,020,492.66
  5. Step 5: Solve for x
    x = 40,644,020,492.66/226,708.89
  6. Step 6: Final answer
    x = 179,278.46

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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.