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Finding the Fourth Proportional to 279,133.33, 418,637.11 and 79,449.30

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Solution

The fourth proportional to 279,133.33, 418,637.11 and 79,449.30 is: 119,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,133.33 : 418,637.11 = 79,449.30 : x
  2. Step 2: Convert to fraction form
    279,133.33/418,637.11 = 79,449.30/x
  3. Step 3: Cross multiply
    279,133.33x = 418,637.11 × 79,449.30
  4. Step 4: Simplify right side
    279,133.33x = 33,260,425,343.52
  5. Step 5: Solve for x
    x = 33,260,425,343.52/279,133.33
  6. Step 6: Final answer
    x = 119,156.05

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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.