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Finding the Fourth Proportional to 225,878.34, 338,799.05 and 76,115.31

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Solution

The fourth proportional to 225,878.34, 338,799.05 and 76,115.31 is: 114,166.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,878.34 : 338,799.05 = 76,115.31 : x
  2. Step 2: Convert to fraction form
    225,878.34/338,799.05 = 76,115.31/x
  3. Step 3: Cross multiply
    225,878.34x = 338,799.05 × 76,115.31
  4. Step 4: Simplify right side
    225,878.34x = 25,787,795,686.71
  5. Step 5: Solve for x
    x = 25,787,795,686.71/225,878.34
  6. Step 6: Final answer
    x = 114,166.75

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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.