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Finding the Fourth Proportional to 197,003.40, 295,418.70 and 78,635.40

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Solution

The fourth proportional to 197,003.40, 295,418.70 and 78,635.40 is: 117,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,003.40 : 295,418.70 = 78,635.40 : x
  2. Step 2: Convert to fraction form
    197,003.40/295,418.70 = 78,635.40/x
  3. Step 3: Cross multiply
    197,003.40x = 295,418.70 × 78,635.40
  4. Step 4: Simplify right side
    197,003.40x = 23,230,367,641.98
  5. Step 5: Solve for x
    x = 23,230,367,641.98/197,003.40
  6. Step 6: Final answer
    x = 117,918.61

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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.