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Finding the Fourth Proportional to 339,103, 508,654.50 and 117,487

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Solution

The fourth proportional to 339,103, 508,654.50 and 117,487 is: 176,230.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,103 : 508,654.50 = 117,487 : x
  2. Step 2: Convert to fraction form
    339,103/508,654.50 = 117,487/x
  3. Step 3: Cross multiply
    339,103x = 508,654.50 × 117,487
  4. Step 4: Simplify right side
    339,103x = 59,760,291,241.50
  5. Step 5: Solve for x
    x = 59,760,291,241.50/339,103
  6. Step 6: Final answer
    x = 176,230.50

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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.