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Finding the Fourth Proportional to 260,686.76, 391,092.56 and 108,799.38

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Solution

The fourth proportional to 260,686.76, 391,092.56 and 108,799.38 is: 163,225.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,686.76 : 391,092.56 = 108,799.38 : x
  2. Step 2: Convert to fraction form
    260,686.76/391,092.56 = 108,799.38/x
  3. Step 3: Cross multiply
    260,686.76x = 391,092.56 × 108,799.38
  4. Step 4: Simplify right side
    260,686.76x = 42,550,627,506.62
  5. Step 5: Solve for x
    x = 42,550,627,506.62/260,686.76
  6. Step 6: Final answer
    x = 163,225.12

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1.5x scale

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.