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Finding the Fourth Proportional to 235,394.80, 352,980.90 and 85,530.64

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Solution

The fourth proportional to 235,394.80, 352,980.90 and 85,530.64 is: 128,255.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,394.80 : 352,980.90 = 85,530.64 : x
  2. Step 2: Convert to fraction form
    235,394.80/352,980.90 = 85,530.64/x
  3. Step 3: Cross multiply
    235,394.80x = 352,980.90 × 85,530.64
  4. Step 4: Simplify right side
    235,394.80x = 30,190,682,284.78
  5. Step 5: Solve for x
    x = 30,190,682,284.78/235,394.80
  6. Step 6: Final answer
    x = 128,255.52

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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.