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Finding the Fourth Proportional to 222,721.20, 334,081.80 and 209,599.20

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Solution

The fourth proportional to 222,721.20, 334,081.80 and 209,599.20 is: 314,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,721.20 : 334,081.80 = 209,599.20 : x
  2. Step 2: Convert to fraction form
    222,721.20/334,081.80 = 209,599.20/x
  3. Step 3: Cross multiply
    222,721.20x = 334,081.80 × 209,599.20
  4. Step 4: Simplify right side
    222,721.20x = 70,023,278,014.56
  5. Step 5: Solve for x
    x = 70,023,278,014.56/222,721.20
  6. Step 6: Final answer
    x = 314,398.80

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1.5x scale

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.