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Finding the Fourth Proportional to 238,338, 328,915.08 and 136,381.68

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Solution

The fourth proportional to 238,338, 328,915.08 and 136,381.68 is: 188,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,338 : 328,915.08 = 136,381.68 : x
  2. Step 2: Convert to fraction form
    238,338/328,915.08 = 136,381.68/x
  3. Step 3: Cross multiply
    238,338x = 328,915.08 × 136,381.68
  4. Step 4: Simplify right side
    238,338x = 44,857,991,187.73
  5. Step 5: Solve for x
    x = 44,857,991,187.73/238,338
  6. Step 6: Final answer
    x = 188,211.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.