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Finding the Fourth Proportional to 194,808.20, 292,212.30 and 76,418.60

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Solution

The fourth proportional to 194,808.20, 292,212.30 and 76,418.60 is: 114,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,808.20 : 292,212.30 = 76,418.60 : x
  2. Step 2: Convert to fraction form
    194,808.20/292,212.30 = 76,418.60/x
  3. Step 3: Cross multiply
    194,808.20x = 292,212.30 × 76,418.60
  4. Step 4: Simplify right side
    194,808.20x = 22,330,454,868.78
  5. Step 5: Solve for x
    x = 22,330,454,868.78/194,808.20
  6. Step 6: Final answer
    x = 114,627.90

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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.