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Finding the Fourth Proportional to 326,298.56, 488,868.48 and 136,340.75

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Solution

The fourth proportional to 326,298.56, 488,868.48 and 136,340.75 is: 204,269.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,298.56 : 488,868.48 = 136,340.75 : x
  2. Step 2: Convert to fraction form
    326,298.56/488,868.48 = 136,340.75/x
  3. Step 3: Cross multiply
    326,298.56x = 488,868.48 × 136,340.75
  4. Step 4: Simplify right side
    326,298.56x = 66,652,692,770.22
  5. Step 5: Solve for x
    x = 66,652,692,770.22/326,298.56
  6. Step 6: Final answer
    x = 204,269.04

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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.