Home / 212,016.72-318,023.52-54,244.80

Finding the Fourth Proportional to 212,016.72, 318,023.52 and 54,244.80

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Solution

The fourth proportional to 212,016.72, 318,023.52 and 54,244.80 is: 81,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,016.72 : 318,023.52 = 54,244.80 : x
  2. Step 2: Convert to fraction form
    212,016.72/318,023.52 = 54,244.80/x
  3. Step 3: Cross multiply
    212,016.72x = 318,023.52 × 54,244.80
  4. Step 4: Simplify right side
    212,016.72x = 17,251,122,237.70
  5. Step 5: Solve for x
    x = 17,251,122,237.70/212,016.72
  6. Step 6: Final answer
    x = 81,366.80

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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.