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Finding the Fourth Proportional to 447,875.21, 672,027.92 and 279,352.28

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Solution

The fourth proportional to 447,875.21, 672,027.92 and 279,352.28 is: 419,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,875.21 : 672,027.92 = 279,352.28 : x
  2. Step 2: Convert to fraction form
    447,875.21/672,027.92 = 279,352.28/x
  3. Step 3: Cross multiply
    447,875.21x = 672,027.92 × 279,352.28
  4. Step 4: Simplify right side
    447,875.21x = 187,732,531,675.66
  5. Step 5: Solve for x
    x = 187,732,531,675.66/447,875.21
  6. Step 6: Final answer
    x = 419,162.59

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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.