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Finding the Fourth Proportional to 209,841.72, 314,793.66 and 76,690.92

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Solution

The fourth proportional to 209,841.72, 314,793.66 and 76,690.92 is: 115,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,841.72 : 314,793.66 = 76,690.92 : x
  2. Step 2: Convert to fraction form
    209,841.72/314,793.66 = 76,690.92/x
  3. Step 3: Cross multiply
    209,841.72x = 314,793.66 × 76,690.92
  4. Step 4: Simplify right side
    209,841.72x = 24,141,815,395.57
  5. Step 5: Solve for x
    x = 24,141,815,395.57/209,841.72
  6. Step 6: Final answer
    x = 115,047.74

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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.