Home / 280,112.70-386,540.15-159,237.21

Finding the Fourth Proportional to 280,112.70, 386,540.15 and 159,237.21

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Solution

The fourth proportional to 280,112.70, 386,540.15 and 159,237.21 is: 219,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,112.70 : 386,540.15 = 159,237.21 : x
  2. Step 2: Convert to fraction form
    280,112.70/386,540.15 = 159,237.21/x
  3. Step 3: Cross multiply
    280,112.70x = 386,540.15 × 159,237.21
  4. Step 4: Simplify right side
    280,112.70x = 61,551,574,242.80
  5. Step 5: Solve for x
    x = 61,551,574,242.80/280,112.70
  6. Step 6: Final answer
    x = 219,738.61

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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.