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Finding the Fourth Proportional to 372,079.80, 558,119.70 and 222,780.60

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Solution

The fourth proportional to 372,079.80, 558,119.70 and 222,780.60 is: 334,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,079.80 : 558,119.70 = 222,780.60 : x
  2. Step 2: Convert to fraction form
    372,079.80/558,119.70 = 222,780.60/x
  3. Step 3: Cross multiply
    372,079.80x = 558,119.70 × 222,780.60
  4. Step 4: Simplify right side
    372,079.80x = 124,338,241,637.82
  5. Step 5: Solve for x
    x = 124,338,241,637.82/372,079.80
  6. Step 6: Final answer
    x = 334,170.90

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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.