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Finding the Fourth Proportional to 279,241.25, 418,570.22 and 136,889.42

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Solution

The fourth proportional to 279,241.25, 418,570.22 and 136,889.42 is: 205,191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,241.25 : 418,570.22 = 136,889.42 : x
  2. Step 2: Convert to fraction form
    279,241.25/418,570.22 = 136,889.42/x
  3. Step 3: Cross multiply
    279,241.25x = 418,570.22 × 136,889.42
  4. Step 4: Simplify right side
    279,241.25x = 57,297,831,867.77
  5. Step 5: Solve for x
    x = 57,297,831,867.77/279,241.25
  6. Step 6: Final answer
    x = 205,191.15

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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.