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Finding the Fourth Proportional to 326,464.56, 450,219.87 and 217,631.34

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Solution

The fourth proportional to 326,464.56, 450,219.87 and 217,631.34 is: 300,130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,464.56 : 450,219.87 = 217,631.34 : x
  2. Step 2: Convert to fraction form
    326,464.56/450,219.87 = 217,631.34/x
  3. Step 3: Cross multiply
    326,464.56x = 450,219.87 × 217,631.34
  4. Step 4: Simplify right side
    326,464.56x = 97,981,953,602.73
  5. Step 5: Solve for x
    x = 97,981,953,602.73/326,464.56
  6. Step 6: Final answer
    x = 300,130.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.