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Finding the Fourth Proportional to 330,213.88, 455,691.12 and 179,311.96

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Solution

The fourth proportional to 330,213.88, 455,691.12 and 179,311.96 is: 247,448.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,213.88 : 455,691.12 = 179,311.96 : x
  2. Step 2: Convert to fraction form
    330,213.88/455,691.12 = 179,311.96/x
  3. Step 3: Cross multiply
    330,213.88x = 455,691.12 × 179,311.96
  4. Step 4: Simplify right side
    330,213.88x = 81,710,867,881.80
  5. Step 5: Solve for x
    x = 81,710,867,881.80/330,213.88
  6. Step 6: Final answer
    x = 247,448.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.