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Finding the Fourth Proportional to 253,205.96, 379,995.54 and 120,086.60

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Solution

The fourth proportional to 253,205.96, 379,995.54 and 120,086.60 is: 180,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,205.96 : 379,995.54 = 120,086.60 : x
  2. Step 2: Convert to fraction form
    253,205.96/379,995.54 = 120,086.60/x
  3. Step 3: Cross multiply
    253,205.96x = 379,995.54 × 120,086.60
  4. Step 4: Simplify right side
    253,205.96x = 45,632,372,413.76
  5. Step 5: Solve for x
    x = 45,632,372,413.76/253,205.96
  6. Step 6: Final answer
    x = 180,218.40

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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.