Home / 220,632.78-331,058.52-87,510.18

Finding the Fourth Proportional to 220,632.78, 331,058.52 and 87,510.18

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Solution

The fourth proportional to 220,632.78, 331,058.52 and 87,510.18 is: 131,308.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,632.78 : 331,058.52 = 87,510.18 : x
  2. Step 2: Convert to fraction form
    220,632.78/331,058.52 = 87,510.18/x
  3. Step 3: Cross multiply
    220,632.78x = 331,058.52 × 87,510.18
  4. Step 4: Simplify right side
    220,632.78x = 28,970,990,675.73
  5. Step 5: Solve for x
    x = 28,970,990,675.73/220,632.78
  6. Step 6: Final answer
    x = 131,308.64

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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.