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Finding the Fourth Proportional to 329,718.60, 494,577.90 and 218,910.60

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Solution

The fourth proportional to 329,718.60, 494,577.90 and 218,910.60 is: 328,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,718.60 : 494,577.90 = 218,910.60 : x
  2. Step 2: Convert to fraction form
    329,718.60/494,577.90 = 218,910.60/x
  3. Step 3: Cross multiply
    329,718.60x = 494,577.90 × 218,910.60
  4. Step 4: Simplify right side
    329,718.60x = 108,268,344,835.74
  5. Step 5: Solve for x
    x = 108,268,344,835.74/329,718.60
  6. Step 6: Final answer
    x = 328,365.90

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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.