Home / 220,784.32-331,170-71,031.52

Finding the Fourth Proportional to 220,784.32, 331,170 and 71,031.52

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Solution

The fourth proportional to 220,784.32, 331,170 and 71,031.52 is: 106,545.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,784.32 : 331,170 = 71,031.52 : x
  2. Step 2: Convert to fraction form
    220,784.32/331,170 = 71,031.52/x
  3. Step 3: Cross multiply
    220,784.32x = 331,170 × 71,031.52
  4. Step 4: Simplify right side
    220,784.32x = 23,523,508,478.40
  5. Step 5: Solve for x
    x = 23,523,508,478.40/220,784.32
  6. Step 6: Final answer
    x = 106,545.20

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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.