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Finding the Fourth Proportional to 372,805.20, 559,380.60 and 195,512.40

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Solution

The fourth proportional to 372,805.20, 559,380.60 and 195,512.40 is: 293,359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,805.20 : 559,380.60 = 195,512.40 : x
  2. Step 2: Convert to fraction form
    372,805.20/559,380.60 = 195,512.40/x
  3. Step 3: Cross multiply
    372,805.20x = 559,380.60 × 195,512.40
  4. Step 4: Simplify right side
    372,805.20x = 109,365,843,619.44
  5. Step 5: Solve for x
    x = 109,365,843,619.44/372,805.20
  6. Step 6: Final answer
    x = 293,359.22

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1.5x scale

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.