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Finding the Fourth Proportional to 215,235, 322,904.37 and 67,491

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Solution

The fourth proportional to 215,235, 322,904.37 and 67,491 is: 101,252.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,235 : 322,904.37 = 67,491 : x
  2. Step 2: Convert to fraction form
    215,235/322,904.37 = 67,491/x
  3. Step 3: Cross multiply
    215,235x = 322,904.37 × 67,491
  4. Step 4: Simplify right side
    215,235x = 21,793,138,835.67
  5. Step 5: Solve for x
    x = 21,793,138,835.67/215,235
  6. Step 6: Final answer
    x = 101,252.76

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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.