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Finding the Fourth Proportional to 212,964.75, 319,353.57 and 79,751.59

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Solution

The fourth proportional to 212,964.75, 319,353.57 and 79,751.59 is: 119,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,964.75 : 319,353.57 = 79,751.59 : x
  2. Step 2: Convert to fraction form
    212,964.75/319,353.57 = 79,751.59/x
  3. Step 3: Cross multiply
    212,964.75x = 319,353.57 × 79,751.59
  4. Step 4: Simplify right side
    212,964.75x = 25,468,954,181.29
  5. Step 5: Solve for x
    x = 25,468,954,181.29/212,964.75
  6. Step 6: Final answer
    x = 119,592.35

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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.