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Finding the Fourth Proportional to 490,616.70, 736,210.59 and 206,286.66

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Solution

The fourth proportional to 490,616.70, 736,210.59 and 206,286.66 is: 309,550.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,616.70 : 736,210.59 = 206,286.66 : x
  2. Step 2: Convert to fraction form
    490,616.70/736,210.59 = 206,286.66/x
  3. Step 3: Cross multiply
    490,616.70x = 736,210.59 × 206,286.66
  4. Step 4: Simplify right side
    490,616.70x = 151,870,423,667.73
  5. Step 5: Solve for x
    x = 151,870,423,667.73/490,616.70
  6. Step 6: Final answer
    x = 309,550.05

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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.