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Finding the Fourth Proportional to 338,907, 508,438.62 and 117,291

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Solution

The fourth proportional to 338,907, 508,438.62 and 117,291 is: 175,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,907 : 508,438.62 = 117,291 : x
  2. Step 2: Convert to fraction form
    338,907/508,438.62 = 117,291/x
  3. Step 3: Cross multiply
    338,907x = 508,438.62 × 117,291
  4. Step 4: Simplify right side
    338,907x = 59,635,274,178.42
  5. Step 5: Solve for x
    x = 59,635,274,178.42/338,907
  6. Step 6: Final answer
    x = 175,963.54

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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.