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Finding the Fourth Proportional to 447,875.71, 672,028.67 and 279,352.78

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Solution

The fourth proportional to 447,875.71, 672,028.67 and 279,352.78 is: 419,163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,875.71 : 672,028.67 = 279,352.78 : x
  2. Step 2: Convert to fraction form
    447,875.71/672,028.67 = 279,352.78/x
  3. Step 3: Cross multiply
    447,875.71x = 672,028.67 × 279,352.78
  4. Step 4: Simplify right side
    447,875.71x = 187,733,077,204.20
  5. Step 5: Solve for x
    x = 187,733,077,204.20/447,875.71
  6. Step 6: Final answer
    x = 419,163.34

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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.