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Finding the Fourth Proportional to 197,219.80, 295,667.70 and 84,986.20

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Solution

The fourth proportional to 197,219.80, 295,667.70 and 84,986.20 is: 127,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,219.80 : 295,667.70 = 84,986.20 : x
  2. Step 2: Convert to fraction form
    197,219.80/295,667.70 = 84,986.20/x
  3. Step 3: Cross multiply
    197,219.80x = 295,667.70 × 84,986.20
  4. Step 4: Simplify right side
    197,219.80x = 25,127,674,285.74
  5. Step 5: Solve for x
    x = 25,127,674,285.74/197,219.80
  6. Step 6: Final answer
    x = 127,409.49

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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.