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Finding the Fourth Proportional to 212,736.78, 319,160.52 and 79,627.50

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Solution

The fourth proportional to 212,736.78, 319,160.52 and 79,627.50 is: 119,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,736.78 : 319,160.52 = 79,627.50 : x
  2. Step 2: Convert to fraction form
    212,736.78/319,160.52 = 79,627.50/x
  3. Step 3: Cross multiply
    212,736.78x = 319,160.52 × 79,627.50
  4. Step 4: Simplify right side
    212,736.78x = 25,413,954,306.30
  5. Step 5: Solve for x
    x = 25,413,954,306.30/212,736.78
  6. Step 6: Final answer
    x = 119,461.97

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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.