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Finding the Fourth Proportional to 214,447.88, 321,578.36 and 72,266.66

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Solution

The fourth proportional to 214,447.88, 321,578.36 and 72,266.66 is: 108,368.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,447.88 : 321,578.36 = 72,266.66 : x
  2. Step 2: Convert to fraction form
    214,447.88/321,578.36 = 72,266.66/x
  3. Step 3: Cross multiply
    214,447.88x = 321,578.36 × 72,266.66
  4. Step 4: Simplify right side
    214,447.88x = 23,239,394,005.48
  5. Step 5: Solve for x
    x = 23,239,394,005.48/214,447.88
  6. Step 6: Final answer
    x = 108,368.49

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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.