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Finding the Fourth Proportional to 235,086, 352,628.28 and 85,326.08

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Solution

The fourth proportional to 235,086, 352,628.28 and 85,326.08 is: 127,988.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,086 : 352,628.28 = 85,326.08 : x
  2. Step 2: Convert to fraction form
    235,086/352,628.28 = 85,326.08/x
  3. Step 3: Cross multiply
    235,086x = 352,628.28 × 85,326.08
  4. Step 4: Simplify right side
    235,086x = 30,088,388,829.54
  5. Step 5: Solve for x
    x = 30,088,388,829.54/235,086
  6. Step 6: Final answer
    x = 127,988.86

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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.