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Finding the Fourth Proportional to 221,745.80, 332,618.70 and 63,979.40

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Solution

The fourth proportional to 221,745.80, 332,618.70 and 63,979.40 is: 95,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,745.80 : 332,618.70 = 63,979.40 : x
  2. Step 2: Convert to fraction form
    221,745.80/332,618.70 = 63,979.40/x
  3. Step 3: Cross multiply
    221,745.80x = 332,618.70 × 63,979.40
  4. Step 4: Simplify right side
    221,745.80x = 21,280,744,854.78
  5. Step 5: Solve for x
    x = 21,280,744,854.78/221,745.80
  6. Step 6: Final answer
    x = 95,969.10

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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.