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Finding the Fourth Proportional to 279,241.79, 418,571.04 and 136,889.96

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Solution

The fourth proportional to 279,241.79, 418,571.04 and 136,889.96 is: 205,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,241.79 : 418,571.04 = 136,889.96 : x
  2. Step 2: Convert to fraction form
    279,241.79/418,571.04 = 136,889.96/x
  3. Step 3: Cross multiply
    279,241.79x = 418,571.04 × 136,889.96
  4. Step 4: Simplify right side
    279,241.79x = 57,298,170,829.90
  5. Step 5: Solve for x
    x = 57,298,170,829.90/279,241.79
  6. Step 6: Final answer
    x = 205,191.97

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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.