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Finding the Fourth Proportional to 354,481.40, 532,110.90 and 221,511.80

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Solution

The fourth proportional to 354,481.40, 532,110.90 and 221,511.80 is: 332,510.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,481.40 : 532,110.90 = 221,511.80 : x
  2. Step 2: Convert to fraction form
    354,481.40/532,110.90 = 221,511.80/x
  3. Step 3: Cross multiply
    354,481.40x = 532,110.90 × 221,511.80
  4. Step 4: Simplify right side
    354,481.40x = 117,868,843,258.62
  5. Step 5: Solve for x
    x = 117,868,843,258.62/354,481.40
  6. Step 6: Final answer
    x = 332,510.66

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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.