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Finding the Fourth Proportional to 222,903, 334,408.52 and 128,193.80

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Solution

The fourth proportional to 222,903, 334,408.52 and 128,193.80 is: 192,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,903 : 334,408.52 = 128,193.80 : x
  2. Step 2: Convert to fraction form
    222,903/334,408.52 = 128,193.80/x
  3. Step 3: Cross multiply
    222,903x = 334,408.52 × 128,193.80
  4. Step 4: Simplify right side
    222,903x = 42,869,098,931.18
  5. Step 5: Solve for x
    x = 42,869,098,931.18/222,903
  6. Step 6: Final answer
    x = 192,321.77

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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.