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Finding the Fourth Proportional to 244,146, 366,221.28 and 86,401.20

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Solution

The fourth proportional to 244,146, 366,221.28 and 86,401.20 is: 129,602.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    244,146 : 366,221.28 = 86,401.20 : x
  2. Step 2: Convert to fraction form
    244,146/366,221.28 = 86,401.20/x
  3. Step 3: Cross multiply
    244,146x = 366,221.28 × 86,401.20
  4. Step 4: Simplify right side
    244,146x = 31,641,958,057.54
  5. Step 5: Solve for x
    x = 31,641,958,057.54/244,146
  6. Step 6: Final answer
    x = 129,602.61

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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.