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Finding the Fourth Proportional to 323,080.45, 484,620.81 and 145,379.88

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Solution

The fourth proportional to 323,080.45, 484,620.81 and 145,379.88 is: 218,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,080.45 : 484,620.81 = 145,379.88 : x
  2. Step 2: Convert to fraction form
    323,080.45/484,620.81 = 145,379.88/x
  3. Step 3: Cross multiply
    323,080.45x = 484,620.81 × 145,379.88
  4. Step 4: Simplify right side
    323,080.45x = 70,454,114,658.13
  5. Step 5: Solve for x
    x = 70,454,114,658.13/323,080.45
  6. Step 6: Final answer
    x = 218,069.88

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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.