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Finding the Fourth Proportional to 193,765.40, 290,432.10 and 75,397.40

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Solution

The fourth proportional to 193,765.40, 290,432.10 and 75,397.40 is: 113,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,765.40 : 290,432.10 = 75,397.40 : x
  2. Step 2: Convert to fraction form
    193,765.40/290,432.10 = 75,397.40/x
  3. Step 3: Cross multiply
    193,765.40x = 290,432.10 × 75,397.40
  4. Step 4: Simplify right side
    193,765.40x = 21,897,825,216.54
  5. Step 5: Solve for x
    x = 21,897,825,216.54/193,765.40
  6. Step 6: Final answer
    x = 113,012.05

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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.