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Finding the Fourth Proportional to 279,419.49, 419,191.73 and 101,926.51

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Solution

The fourth proportional to 279,419.49, 419,191.73 and 101,926.51 is: 152,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,419.49 : 419,191.73 = 101,926.51 : x
  2. Step 2: Convert to fraction form
    279,419.49/419,191.73 = 101,926.51/x
  3. Step 3: Cross multiply
    279,419.49x = 419,191.73 × 101,926.51
  4. Step 4: Simplify right side
    279,419.49x = 42,726,750,059.76
  5. Step 5: Solve for x
    x = 42,726,750,059.76/279,419.49
  6. Step 6: Final answer
    x = 152,912.56

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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.