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Finding the Fourth Proportional to 230,011.20, 345,016.80 and 219,974.40

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Solution

The fourth proportional to 230,011.20, 345,016.80 and 219,974.40 is: 329,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,011.20 : 345,016.80 = 219,974.40 : x
  2. Step 2: Convert to fraction form
    230,011.20/345,016.80 = 219,974.40/x
  3. Step 3: Cross multiply
    230,011.20x = 345,016.80 × 219,974.40
  4. Step 4: Simplify right side
    230,011.20x = 75,894,863,569.92
  5. Step 5: Solve for x
    x = 75,894,863,569.92/230,011.20
  6. Step 6: Final answer
    x = 329,961.60

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1.5x scale

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.