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Finding the Fourth Proportional to 260,747.76, 390,517.56 and 222,380.40

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Solution

The fourth proportional to 260,747.76, 390,517.56 and 222,380.40 is: 333,055.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,747.76 : 390,517.56 = 222,380.40 : x
  2. Step 2: Convert to fraction form
    260,747.76/390,517.56 = 222,380.40/x
  3. Step 3: Cross multiply
    260,747.76x = 390,517.56 × 222,380.40
  4. Step 4: Simplify right side
    260,747.76x = 86,843,451,199.82
  5. Step 5: Solve for x
    x = 86,843,451,199.82/260,747.76
  6. Step 6: Final answer
    x = 333,055.41

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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.