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Finding the Fourth Proportional to 221,481.40, 332,222.10 and 208,359.40

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Solution

The fourth proportional to 221,481.40, 332,222.10 and 208,359.40 is: 312,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,481.40 : 332,222.10 = 208,359.40 : x
  2. Step 2: Convert to fraction form
    221,481.40/332,222.10 = 208,359.40/x
  3. Step 3: Cross multiply
    221,481.40x = 332,222.10 × 208,359.40
  4. Step 4: Simplify right side
    221,481.40x = 69,221,597,422.74
  5. Step 5: Solve for x
    x = 69,221,597,422.74/221,481.40
  6. Step 6: Final answer
    x = 312,539.10

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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.