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Finding the Fourth Proportional to 491,381.73, 737,076.72 and 136,423.43

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Solution

The fourth proportional to 491,381.73, 737,076.72 and 136,423.43 is: 204,636.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,381.73 : 737,076.72 = 136,423.43 : x
  2. Step 2: Convert to fraction form
    491,381.73/737,076.72 = 136,423.43/x
  3. Step 3: Cross multiply
    491,381.73x = 737,076.72 × 136,423.43
  4. Step 4: Simplify right side
    491,381.73x = 100,554,534,656.61
  5. Step 5: Solve for x
    x = 100,554,534,656.61/491,381.73
  6. Step 6: Final answer
    x = 204,636.29

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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.