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Finding the Fourth Proportional to 339,277.20, 509,168.52 and 129,325.20

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Solution

The fourth proportional to 339,277.20, 509,168.52 and 129,325.20 is: 194,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,277.20 : 509,168.52 = 129,325.20 : x
  2. Step 2: Convert to fraction form
    339,277.20/509,168.52 = 129,325.20/x
  3. Step 3: Cross multiply
    339,277.20x = 509,168.52 × 129,325.20
  4. Step 4: Simplify right side
    339,277.20x = 65,848,320,682.70
  5. Step 5: Solve for x
    x = 65,848,320,682.70/339,277.20
  6. Step 6: Final answer
    x = 194,084.13

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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.