Home / 217,517.98-326,238.06-138,397.18

Finding the Fourth Proportional to 217,517.98, 326,238.06 and 138,397.18

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Solution

The fourth proportional to 217,517.98, 326,238.06 and 138,397.18 is: 207,571.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,517.98 : 326,238.06 = 138,397.18 : x
  2. Step 2: Convert to fraction form
    217,517.98/326,238.06 = 138,397.18/x
  3. Step 3: Cross multiply
    217,517.98x = 326,238.06 × 138,397.18
  4. Step 4: Simplify right side
    217,517.98x = 45,150,427,512.67
  5. Step 5: Solve for x
    x = 45,150,427,512.67/217,517.98
  6. Step 6: Final answer
    x = 207,571.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.