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Finding the Fourth Proportional to 391,233.66, 587,068.46 and 211,315.44

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Solution

The fourth proportional to 391,233.66, 587,068.46 and 211,315.44 is: 317,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,233.66 : 587,068.46 = 211,315.44 : x
  2. Step 2: Convert to fraction form
    391,233.66/587,068.46 = 211,315.44/x
  3. Step 3: Cross multiply
    391,233.66x = 587,068.46 × 211,315.44
  4. Step 4: Simplify right side
    391,233.66x = 124,056,629,935.02
  5. Step 5: Solve for x
    x = 124,056,629,935.02/391,233.66
  6. Step 6: Final answer
    x = 317,090.89

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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.