Home / 221,209.73-305,295.38-125,730.78

Finding the Fourth Proportional to 221,209.73, 305,295.38 and 125,730.78

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Solution

The fourth proportional to 221,209.73, 305,295.38 and 125,730.78 is: 173,523.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,209.73 : 305,295.38 = 125,730.78 : x
  2. Step 2: Convert to fraction form
    221,209.73/305,295.38 = 125,730.78/x
  3. Step 3: Cross multiply
    221,209.73x = 305,295.38 × 125,730.78
  4. Step 4: Simplify right side
    221,209.73x = 38,385,026,257.80
  5. Step 5: Solve for x
    x = 38,385,026,257.80/221,209.73
  6. Step 6: Final answer
    x = 173,523.23

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1.5x scale

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.