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Finding the Fourth Proportional to 193,273.60, 289,780.80 and 88,038.40

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Solution

The fourth proportional to 193,273.60, 289,780.80 and 88,038.40 is: 131,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,273.60 : 289,780.80 = 88,038.40 : x
  2. Step 2: Convert to fraction form
    193,273.60/289,780.80 = 88,038.40/x
  3. Step 3: Cross multiply
    193,273.60x = 289,780.80 × 88,038.40
  4. Step 4: Simplify right side
    193,273.60x = 25,511,837,982.72
  5. Step 5: Solve for x
    x = 25,511,837,982.72/193,273.60
  6. Step 6: Final answer
    x = 131,998.57

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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.