Home / 221,422.61-305,587.79-124,629.41

Finding the Fourth Proportional to 221,422.61, 305,587.79 and 124,629.41

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Solution

The fourth proportional to 221,422.61, 305,587.79 and 124,629.41 is: 172,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,422.61 : 305,587.79 = 124,629.41 : x
  2. Step 2: Convert to fraction form
    221,422.61/305,587.79 = 124,629.41/x
  3. Step 3: Cross multiply
    221,422.61x = 305,587.79 × 124,629.41
  4. Step 4: Simplify right side
    221,422.61x = 38,085,223,819.82
  5. Step 5: Solve for x
    x = 38,085,223,819.82/221,422.61
  6. Step 6: Final answer
    x = 172,002.42

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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.