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Finding the Fourth Proportional to 217,636.80, 326,066.40 and 177,979.20

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Solution

The fourth proportional to 217,636.80, 326,066.40 and 177,979.20 is: 266,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,636.80 : 326,066.40 = 177,979.20 : x
  2. Step 2: Convert to fraction form
    217,636.80/326,066.40 = 177,979.20/x
  3. Step 3: Cross multiply
    217,636.80x = 326,066.40 × 177,979.20
  4. Step 4: Simplify right side
    217,636.80x = 58,033,037,018.88
  5. Step 5: Solve for x
    x = 58,033,037,018.88/217,636.80
  6. Step 6: Final answer
    x = 266,650.85

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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.