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Finding the Fourth Proportional to 391,241.58, 587,080.43 and 211,323.38

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Solution

The fourth proportional to 391,241.58, 587,080.43 and 211,323.38 is: 317,102.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,241.58 : 587,080.43 = 211,323.38 : x
  2. Step 2: Convert to fraction form
    391,241.58/587,080.43 = 211,323.38/x
  3. Step 3: Cross multiply
    391,241.58x = 587,080.43 × 211,323.38
  4. Step 4: Simplify right side
    391,241.58x = 124,063,816,807.43
  5. Step 5: Solve for x
    x = 124,063,816,807.43/391,241.58
  6. Step 6: Final answer
    x = 317,102.84

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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.