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Finding the Fourth Proportional to 391,750.33, 587,699.25 and 279,151.22

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Solution

The fourth proportional to 391,750.33, 587,699.25 and 279,151.22 is: 418,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,750.33 : 587,699.25 = 279,151.22 : x
  2. Step 2: Convert to fraction form
    391,750.33/587,699.25 = 279,151.22/x
  3. Step 3: Cross multiply
    391,750.33x = 587,699.25 × 279,151.22
  4. Step 4: Simplify right side
    391,750.33x = 164,056,958,296.33
  5. Step 5: Solve for x
    x = 164,056,958,296.33/391,750.33
  6. Step 6: Final answer
    x = 418,779.38

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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.