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Finding the Fourth Proportional to 339,712.17, 509,554.95 and 115,072.61

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Solution

The fourth proportional to 339,712.17, 509,554.95 and 115,072.61 is: 172,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,712.17 : 509,554.95 = 115,072.61 : x
  2. Step 2: Convert to fraction form
    339,712.17/509,554.95 = 115,072.61/x
  3. Step 3: Cross multiply
    339,712.17x = 509,554.95 × 115,072.61
  4. Step 4: Simplify right side
    339,712.17x = 58,635,816,026.55
  5. Step 5: Solve for x
    x = 58,635,816,026.55/339,712.17
  6. Step 6: Final answer
    x = 172,604.40

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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.