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Finding the Fourth Proportional to 391,415.90, 586,181.61 and 222,523.00

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Solution

The fourth proportional to 391,415.90, 586,181.61 and 222,523.00 is: 333,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,415.90 : 586,181.61 = 222,523.00 : x
  2. Step 2: Convert to fraction form
    391,415.90/586,181.61 = 222,523.00/x
  3. Step 3: Cross multiply
    391,415.90x = 586,181.61 × 222,523.00
  4. Step 4: Simplify right side
    391,415.90x = 130,438,888,936.58
  5. Step 5: Solve for x
    x = 130,438,888,936.58/391,415.90
  6. Step 6: Final answer
    x = 333,248.83

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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.