Home / 221,280.98-305,315.26-125,780.15

Finding the Fourth Proportional to 221,280.98, 305,315.26 and 125,780.15

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Solution

The fourth proportional to 221,280.98, 305,315.26 and 125,780.15 is: 173,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,280.98 : 305,315.26 = 125,780.15 : x
  2. Step 2: Convert to fraction form
    221,280.98/305,315.26 = 125,780.15/x
  3. Step 3: Cross multiply
    221,280.98x = 305,315.26 × 125,780.15
  4. Step 4: Simplify right side
    221,280.98x = 38,402,599,648.93
  5. Step 5: Solve for x
    x = 38,402,599,648.93/221,280.98
  6. Step 6: Final answer
    x = 173,546.78

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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.