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Finding the Fourth Proportional to 225,578, 311,307.84 and 124,976

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Solution

The fourth proportional to 225,578, 311,307.84 and 124,976 is: 172,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,578 : 311,307.84 = 124,976 : x
  2. Step 2: Convert to fraction form
    225,578/311,307.84 = 124,976/x
  3. Step 3: Cross multiply
    225,578x = 311,307.84 × 124,976
  4. Step 4: Simplify right side
    225,578x = 38,906,008,611.84
  5. Step 5: Solve for x
    x = 38,906,008,611.84/225,578
  6. Step 6: Final answer
    x = 172,472.53

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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.