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Finding the Fourth Proportional to 225,778.09, 338,870.18 and 120,686.89

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Solution

The fourth proportional to 225,778.09, 338,870.18 and 120,686.89 is: 181,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,778.09 : 338,870.18 = 120,686.89 : x
  2. Step 2: Convert to fraction form
    225,778.09/338,870.18 = 120,686.89/x
  3. Step 3: Cross multiply
    225,778.09x = 338,870.18 × 120,686.89
  4. Step 4: Simplify right side
    225,778.09x = 40,897,188,137.94
  5. Step 5: Solve for x
    x = 40,897,188,137.94/225,778.09
  6. Step 6: Final answer
    x = 181,138.87

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1.5x scale

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.