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Finding the Fourth Proportional to 225,639.68, 311,395.20 and 125,035.52

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Solution

The fourth proportional to 225,639.68, 311,395.20 and 125,035.52 is: 172,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,639.68 : 311,395.20 = 125,035.52 : x
  2. Step 2: Convert to fraction form
    225,639.68/311,395.20 = 125,035.52/x
  3. Step 3: Cross multiply
    225,639.68x = 311,395.20 × 125,035.52
  4. Step 4: Simplify right side
    225,639.68x = 38,935,460,757.50
  5. Step 5: Solve for x
    x = 38,935,460,757.50/225,639.68
  6. Step 6: Final answer
    x = 172,555.91

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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.