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Finding the Fourth Proportional to 212,043.62, 318,016.20 and 62,243.68

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Solution

The fourth proportional to 212,043.62, 318,016.20 and 62,243.68 is: 93,351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,043.62 : 318,016.20 = 62,243.68 : x
  2. Step 2: Convert to fraction form
    212,043.62/318,016.20 = 62,243.68/x
  3. Step 3: Cross multiply
    212,043.62x = 318,016.20 × 62,243.68
  4. Step 4: Simplify right side
    212,043.62x = 19,794,498,587.62
  5. Step 5: Solve for x
    x = 19,794,498,587.62/212,043.62
  6. Step 6: Final answer
    x = 93,351.07

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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.