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Finding the Fourth Proportional to 279,959.76, 419,936.00 and 69,599.52

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Solution

The fourth proportional to 279,959.76, 419,936.00 and 69,599.52 is: 104,398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,959.76 : 419,936.00 = 69,599.52 : x
  2. Step 2: Convert to fraction form
    279,959.76/419,936.00 = 69,599.52/x
  3. Step 3: Cross multiply
    279,959.76x = 419,936.00 × 69,599.52
  4. Step 4: Simplify right side
    279,959.76x = 29,227,343,682.72
  5. Step 5: Solve for x
    x = 29,227,343,682.72/279,959.76
  6. Step 6: Final answer
    x = 104,398.37

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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.