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Finding the Fourth Proportional to 339,654.47, 508,817.36 and 279,768.92

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Solution

The fourth proportional to 339,654.47, 508,817.36 and 279,768.92 is: 419,106.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,654.47 : 508,817.36 = 279,768.92 : x
  2. Step 2: Convert to fraction form
    339,654.47/508,817.36 = 279,768.92/x
  3. Step 3: Cross multiply
    339,654.47x = 508,817.36 × 279,768.92
  4. Step 4: Simplify right side
    339,654.47x = 142,351,281,439.79
  5. Step 5: Solve for x
    x = 142,351,281,439.79/339,654.47
  6. Step 6: Final answer
    x = 419,106.17

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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.