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Finding the Fourth Proportional to 372,223.60, 558,335.40 and 91,740.85

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Solution

The fourth proportional to 372,223.60, 558,335.40 and 91,740.85 is: 137,611.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,223.60 : 558,335.40 = 91,740.85 : x
  2. Step 2: Convert to fraction form
    372,223.60/558,335.40 = 91,740.85/x
  3. Step 3: Cross multiply
    372,223.60x = 558,335.40 × 91,740.85
  4. Step 4: Simplify right side
    372,223.60x = 51,222,164,181.09
  5. Step 5: Solve for x
    x = 51,222,164,181.09/372,223.60
  6. Step 6: Final answer
    x = 137,611.28

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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.