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Finding the Fourth Proportional to 225,431.68, 311,105.10 and 124,829.68

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Solution

The fourth proportional to 225,431.68, 311,105.10 and 124,829.68 is: 172,270.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,431.68 : 311,105.10 = 124,829.68 : x
  2. Step 2: Convert to fraction form
    225,431.68/311,105.10 = 124,829.68/x
  3. Step 3: Cross multiply
    225,431.68x = 311,105.10 × 124,829.68
  4. Step 4: Simplify right side
    225,431.68x = 38,835,150,079.37
  5. Step 5: Solve for x
    x = 38,835,150,079.37/225,431.68
  6. Step 6: Final answer
    x = 172,270.15

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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.