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Finding the Fourth Proportional to 391,075.44, 539,618.40 and 227,766.48

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Solution

The fourth proportional to 391,075.44, 539,618.40 and 227,766.48 is: 314,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,075.44 : 539,618.40 = 227,766.48 : x
  2. Step 2: Convert to fraction form
    391,075.44/539,618.40 = 227,766.48/x
  3. Step 3: Cross multiply
    391,075.44x = 539,618.40 × 227,766.48
  4. Step 4: Simplify right side
    391,075.44x = 122,906,983,511.23
  5. Step 5: Solve for x
    x = 122,906,983,511.23/391,075.44
  6. Step 6: Final answer
    x = 314,279.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.