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Finding the Fourth Proportional to 490,318.68, 735,458.04 and 135,323.58

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Solution

The fourth proportional to 490,318.68, 735,458.04 and 135,323.58 is: 202,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,318.68 : 735,458.04 = 135,323.58 : x
  2. Step 2: Convert to fraction form
    490,318.68/735,458.04 = 135,323.58/x
  3. Step 3: Cross multiply
    490,318.68x = 735,458.04 × 135,323.58
  4. Step 4: Simplify right side
    490,318.68x = 99,524,814,912.58
  5. Step 5: Solve for x
    x = 99,524,814,912.58/490,318.68
  6. Step 6: Final answer
    x = 202,979.86

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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.