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Finding the Fourth Proportional to 298,711.70, 448,067.55 and 132,499.70

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Solution

The fourth proportional to 298,711.70, 448,067.55 and 132,499.70 is: 198,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,711.70 : 448,067.55 = 132,499.70 : x
  2. Step 2: Convert to fraction form
    298,711.70/448,067.55 = 132,499.70/x
  3. Step 3: Cross multiply
    298,711.70x = 448,067.55 × 132,499.70
  4. Step 4: Simplify right side
    298,711.70x = 59,368,815,954.74
  5. Step 5: Solve for x
    x = 59,368,815,954.74/298,711.70
  6. Step 6: Final answer
    x = 198,749.55

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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.