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Finding the Fourth Proportional to 197,219.80, 295,392.30 and 78,830.20

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Solution

The fourth proportional to 197,219.80, 295,392.30 and 78,830.20 is: 118,070.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,219.80 : 295,392.30 = 78,830.20 : x
  2. Step 2: Convert to fraction form
    197,219.80/295,392.30 = 78,830.20/x
  3. Step 3: Cross multiply
    197,219.80x = 295,392.30 × 78,830.20
  4. Step 4: Simplify right side
    197,219.80x = 23,285,834,087.46
  5. Step 5: Solve for x
    x = 23,285,834,087.46/197,219.80
  6. Step 6: Final answer
    x = 118,070.47

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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.