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Finding the Fourth Proportional to 391,761.96, 540,754.56 and 222,109.08

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Solution

The fourth proportional to 391,761.96, 540,754.56 and 222,109.08 is: 306,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,761.96 : 540,754.56 = 222,109.08 : x
  2. Step 2: Convert to fraction form
    391,761.96/540,754.56 = 222,109.08/x
  3. Step 3: Cross multiply
    391,761.96x = 540,754.56 × 222,109.08
  4. Step 4: Simplify right side
    391,761.96x = 120,106,497,827.41
  5. Step 5: Solve for x
    x = 120,106,497,827.41/391,761.96
  6. Step 6: Final answer
    x = 306,580.30

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1.5x scale

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.