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Finding the Fourth Proportional to 372,218.40, 558,327.60 and 345,974.40

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Solution

The fourth proportional to 372,218.40, 558,327.60 and 345,974.40 is: 518,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,218.40 : 558,327.60 = 345,974.40 : x
  2. Step 2: Convert to fraction form
    372,218.40/558,327.60 = 345,974.40/x
  3. Step 3: Cross multiply
    372,218.40x = 558,327.60 × 345,974.40
  4. Step 4: Simplify right side
    372,218.40x = 193,167,056,413.44
  5. Step 5: Solve for x
    x = 193,167,056,413.44/372,218.40
  6. Step 6: Final answer
    x = 518,961.60

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Similar ratio
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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.