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Finding the Fourth Proportional to 260,881.30, 391,270.62 and 83,340.46

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Solution

The fourth proportional to 260,881.30, 391,270.62 and 83,340.46 is: 124,994.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,881.30 : 391,270.62 = 83,340.46 : x
  2. Step 2: Convert to fraction form
    260,881.30/391,270.62 = 83,340.46/x
  3. Step 3: Cross multiply
    260,881.30x = 391,270.62 × 83,340.46
  4. Step 4: Simplify right side
    260,881.30x = 32,608,673,455.29
  5. Step 5: Solve for x
    x = 32,608,673,455.29/260,881.30
  6. Step 6: Final answer
    x = 124,994.29

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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.