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Finding the Fourth Proportional to 391,486.20, 587,273.66 and 351,258.03

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Solution

The fourth proportional to 391,486.20, 587,273.66 and 351,258.03 is: 526,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,486.20 : 587,273.66 = 351,258.03 : x
  2. Step 2: Convert to fraction form
    391,486.20/587,273.66 = 351,258.03/x
  3. Step 3: Cross multiply
    391,486.20x = 587,273.66 × 351,258.03
  4. Step 4: Simplify right side
    391,486.20x = 206,284,588,882.49
  5. Step 5: Solve for x
    x = 206,284,588,882.49/391,486.20
  6. Step 6: Final answer
    x = 526,926.85

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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.