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Finding the Fourth Proportional to 212,534.62, 318,882.93 and 79,474.30

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Solution

The fourth proportional to 212,534.62, 318,882.93 and 79,474.30 is: 119,241.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,534.62 : 318,882.93 = 79,474.30 : x
  2. Step 2: Convert to fraction form
    212,534.62/318,882.93 = 79,474.30/x
  3. Step 3: Cross multiply
    212,534.62x = 318,882.93 × 79,474.30
  4. Step 4: Simplify right side
    212,534.62x = 25,342,997,643.70
  5. Step 5: Solve for x
    x = 25,342,997,643.70/212,534.62
  6. Step 6: Final answer
    x = 119,241.74

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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.