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Finding the Fourth Proportional to 323,081.45, 484,622.31 and 145,380.88

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Solution

The fourth proportional to 323,081.45, 484,622.31 and 145,380.88 is: 218,071.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,081.45 : 484,622.31 = 145,380.88 : x
  2. Step 2: Convert to fraction form
    323,081.45/484,622.31 = 145,380.88/x
  3. Step 3: Cross multiply
    323,081.45x = 484,622.31 × 145,380.88
  4. Step 4: Simplify right side
    323,081.45x = 70,454,817,895.43
  5. Step 5: Solve for x
    x = 70,454,817,895.43/323,081.45
  6. Step 6: Final answer
    x = 218,071.38

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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.