Home / 239,397.32-330,370.55-131,971.20

Finding the Fourth Proportional to 239,397.32, 330,370.55 and 131,971.20

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Solution

The fourth proportional to 239,397.32, 330,370.55 and 131,971.20 is: 182,121.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,397.32 : 330,370.55 = 131,971.20 : x
  2. Step 2: Convert to fraction form
    239,397.32/330,370.55 = 131,971.20/x
  3. Step 3: Cross multiply
    239,397.32x = 330,370.55 × 131,971.20
  4. Step 4: Simplify right side
    239,397.32x = 43,599,398,258.09
  5. Step 5: Solve for x
    x = 43,599,398,258.09/239,397.32
  6. Step 6: Final answer
    x = 182,121.49

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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.