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Finding the Fourth Proportional to 339,460.45, 509,264.12 and 129,102.37

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Solution

The fourth proportional to 339,460.45, 509,264.12 and 129,102.37 is: 193,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,460.45 : 509,264.12 = 129,102.37 : x
  2. Step 2: Convert to fraction form
    339,460.45/509,264.12 = 129,102.37/x
  3. Step 3: Cross multiply
    339,460.45x = 509,264.12 × 129,102.37
  4. Step 4: Simplify right side
    339,460.45x = 65,747,204,847.96
  5. Step 5: Solve for x
    x = 65,747,204,847.96/339,460.45
  6. Step 6: Final answer
    x = 193,681.49

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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.