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Finding the Fourth Proportional to 215,365, 323,060.46 and 67,621

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Solution

The fourth proportional to 215,365, 323,060.46 and 67,621 is: 101,435.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,365 : 323,060.46 = 67,621 : x
  2. Step 2: Convert to fraction form
    215,365/323,060.46 = 67,621/x
  3. Step 3: Cross multiply
    215,365x = 323,060.46 × 67,621
  4. Step 4: Simplify right side
    215,365x = 21,845,671,365.66
  5. Step 5: Solve for x
    x = 21,845,671,365.66/215,365
  6. Step 6: Final answer
    x = 101,435.57

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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.