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Finding the Fourth Proportional to 339,992.60, 509,843.10 and 171,447.80

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Solution

The fourth proportional to 339,992.60, 509,843.10 and 171,447.80 is: 257,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,992.60 : 509,843.10 = 171,447.80 : x
  2. Step 2: Convert to fraction form
    339,992.60/509,843.10 = 171,447.80/x
  3. Step 3: Cross multiply
    339,992.60x = 509,843.10 × 171,447.80
  4. Step 4: Simplify right side
    339,992.60x = 87,411,477,840.18
  5. Step 5: Solve for x
    x = 87,411,477,840.18/339,992.60
  6. Step 6: Final answer
    x = 257,098.18

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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.