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Finding the Fourth Proportional to 808,212.80, 1,211,800.80 and 335,086.40

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Solution

The fourth proportional to 808,212.80, 1,211,800.80 and 335,086.40 is: 502,414.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,212.80 : 1,211,800.80 = 335,086.40 : x
  2. Step 2: Convert to fraction form
    808,212.80/1,211,800.80 = 335,086.40/x
  3. Step 3: Cross multiply
    808,212.80x = 1,211,800.80 × 335,086.40
  4. Step 4: Simplify right side
    808,212.80x = 406,057,967,589.12
  5. Step 5: Solve for x
    x = 406,057,967,589.12/808,212.80
  6. Step 6: Final answer
    x = 502,414.67

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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.