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Finding the Fourth Proportional to 279,798.88, 419,758.29 and 90,270.04

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Solution

The fourth proportional to 279,798.88, 419,758.29 and 90,270.04 is: 135,424.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,798.88 : 419,758.29 = 90,270.04 : x
  2. Step 2: Convert to fraction form
    279,798.88/419,758.29 = 90,270.04/x
  3. Step 3: Cross multiply
    279,798.88x = 419,758.29 × 90,270.04
  4. Step 4: Simplify right side
    279,798.88x = 37,891,597,628.63
  5. Step 5: Solve for x
    x = 37,891,597,628.63/279,798.88
  6. Step 6: Final answer
    x = 135,424.41

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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.