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Finding the Fourth Proportional to 264,218.80, 396,328.20 and 216,979.60

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Solution

The fourth proportional to 264,218.80, 396,328.20 and 216,979.60 is: 325,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,218.80 : 396,328.20 = 216,979.60 : x
  2. Step 2: Convert to fraction form
    264,218.80/396,328.20 = 216,979.60/x
  3. Step 3: Cross multiply
    264,218.80x = 396,328.20 × 216,979.60
  4. Step 4: Simplify right side
    264,218.80x = 85,995,134,304.72
  5. Step 5: Solve for x
    x = 85,995,134,304.72/264,218.80
  6. Step 6: Final answer
    x = 325,469.40

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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.