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Finding the Fourth Proportional to 222,738.20, 334,107.30 and 128,259.80

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Solution

The fourth proportional to 222,738.20, 334,107.30 and 128,259.80 is: 192,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,738.20 : 334,107.30 = 128,259.80 : x
  2. Step 2: Convert to fraction form
    222,738.20/334,107.30 = 128,259.80/x
  3. Step 3: Cross multiply
    222,738.20x = 334,107.30 × 128,259.80
  4. Step 4: Simplify right side
    222,738.20x = 42,852,535,476.54
  5. Step 5: Solve for x
    x = 42,852,535,476.54/222,738.20
  6. Step 6: Final answer
    x = 192,389.70

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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.