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Finding the Fourth Proportional to 225,401.50, 311,063.79 and 124,799.50

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Solution

The fourth proportional to 225,401.50, 311,063.79 and 124,799.50 is: 172,228.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,401.50 : 311,063.79 = 124,799.50 : x
  2. Step 2: Convert to fraction form
    225,401.50/311,063.79 = 124,799.50/x
  3. Step 3: Cross multiply
    225,401.50x = 311,063.79 × 124,799.50
  4. Step 4: Simplify right side
    225,401.50x = 38,820,605,460.11
  5. Step 5: Solve for x
    x = 38,820,605,460.11/225,401.50
  6. Step 6: Final answer
    x = 172,228.69

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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.