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Finding the Fourth Proportional to 217,082.60, 325,623.90 and 163,860.20

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Solution

The fourth proportional to 217,082.60, 325,623.90 and 163,860.20 is: 245,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,082.60 : 325,623.90 = 163,860.20 : x
  2. Step 2: Convert to fraction form
    217,082.60/325,623.90 = 163,860.20/x
  3. Step 3: Cross multiply
    217,082.60x = 325,623.90 × 163,860.20
  4. Step 4: Simplify right side
    217,082.60x = 53,356,797,378.78
  5. Step 5: Solve for x
    x = 53,356,797,378.78/217,082.60
  6. Step 6: Final answer
    x = 245,790.30

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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.