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Finding the Fourth Proportional to 217,809,736.60, 326,714,604.90 and 216,298,082.20

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Solution

The fourth proportional to 217,809,736.60, 326,714,604.90 and 216,298,082.20 is: 324,447,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,809,736.60 : 326,714,604.90 = 216,298,082.20 : x
  2. Step 2: Convert to fraction form
    217,809,736.60/326,714,604.90 = 216,298,082.20/x
  3. Step 3: Cross multiply
    217,809,736.60x = 326,714,604.90 × 216,298,082.20
  4. Step 4: Simplify right side
    217,809,736.60x = 70,667,742,466,600,712
  5. Step 5: Solve for x
    x = 70,667,742,466,600,712/217,809,736.60
  6. Step 6: Final answer
    x = 324,447,123.30

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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.