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Finding the Fourth Proportional to 222,731.20, 334,096.80 and 128,252.80

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Solution

The fourth proportional to 222,731.20, 334,096.80 and 128,252.80 is: 192,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,731.20 : 334,096.80 = 128,252.80 : x
  2. Step 2: Convert to fraction form
    222,731.20/334,096.80 = 128,252.80/x
  3. Step 3: Cross multiply
    222,731.20x = 334,096.80 × 128,252.80
  4. Step 4: Simplify right side
    222,731.20x = 42,848,850,071.04
  5. Step 5: Solve for x
    x = 42,848,850,071.04/222,731.20
  6. Step 6: Final answer
    x = 192,379.20

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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.