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Finding the Fourth Proportional to 218,786.04, 328,234.41 and 61,014.49

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Solution

The fourth proportional to 218,786.04, 328,234.41 and 61,014.49 is: 91,537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,786.04 : 328,234.41 = 61,014.49 : x
  2. Step 2: Convert to fraction form
    218,786.04/328,234.41 = 61,014.49/x
  3. Step 3: Cross multiply
    218,786.04x = 328,234.41 × 61,014.49
  4. Step 4: Simplify right side
    218,786.04x = 20,027,055,126.60
  5. Step 5: Solve for x
    x = 20,027,055,126.60/218,786.04
  6. Step 6: Final answer
    x = 91,537.17

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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.