Home / 276,290.86-381,281.97-163,120.90

Finding the Fourth Proportional to 276,290.86, 381,281.97 and 163,120.90

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Solution

The fourth proportional to 276,290.86, 381,281.97 and 163,120.90 is: 225,107.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,290.86 : 381,281.97 = 163,120.90 : x
  2. Step 2: Convert to fraction form
    276,290.86/381,281.97 = 163,120.90/x
  3. Step 3: Cross multiply
    276,290.86x = 381,281.97 × 163,120.90
  4. Step 4: Simplify right side
    276,290.86x = 62,195,058,100.17
  5. Step 5: Solve for x
    x = 62,195,058,100.17/276,290.86
  6. Step 6: Final answer
    x = 225,107.19

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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.