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Finding the Fourth Proportional to 339,962.40, 509,992.20 and 115,333.20

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Solution

The fourth proportional to 339,962.40, 509,992.20 and 115,333.20 is: 173,016.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,962.40 : 509,992.20 = 115,333.20 : x
  2. Step 2: Convert to fraction form
    339,962.40/509,992.20 = 115,333.20/x
  3. Step 3: Cross multiply
    339,962.40x = 509,992.20 × 115,333.20
  4. Step 4: Simplify right side
    339,962.40x = 58,819,032,401.04
  5. Step 5: Solve for x
    x = 58,819,032,401.04/339,962.40
  6. Step 6: Final answer
    x = 173,016.29

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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.