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Finding the Fourth Proportional to 209,338.93, 313,881.97 and 93,912.29

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Solution

The fourth proportional to 209,338.93, 313,881.97 and 93,912.29 is: 140,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,338.93 : 313,881.97 = 93,912.29 : x
  2. Step 2: Convert to fraction form
    209,338.93/313,881.97 = 93,912.29/x
  3. Step 3: Cross multiply
    209,338.93x = 313,881.97 × 93,912.29
  4. Step 4: Simplify right side
    209,338.93x = 29,477,374,978.95
  5. Step 5: Solve for x
    x = 29,477,374,978.95/209,338.93
  6. Step 6: Final answer
    x = 140,811.72

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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.