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Finding the Fourth Proportional to 212,479.29, 318,644.66 and 62,679.83

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Solution

The fourth proportional to 212,479.29, 318,644.66 and 62,679.83 is: 93,997.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,479.29 : 318,644.66 = 62,679.83 : x
  2. Step 2: Convert to fraction form
    212,479.29/318,644.66 = 62,679.83/x
  3. Step 3: Cross multiply
    212,479.29x = 318,644.66 × 62,679.83
  4. Step 4: Simplify right side
    212,479.29x = 19,972,591,212.59
  5. Step 5: Solve for x
    x = 19,972,591,212.59/212,479.29
  6. Step 6: Final answer
    x = 93,997.83

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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.