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Finding the Fourth Proportional to 197,285.40, 296,049.60 and 85,019.40

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Solution

The fourth proportional to 197,285.40, 296,049.60 and 85,019.40 is: 127,581.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,285.40 : 296,049.60 = 85,019.40 : x
  2. Step 2: Convert to fraction form
    197,285.40/296,049.60 = 85,019.40/x
  3. Step 3: Cross multiply
    197,285.40x = 296,049.60 × 85,019.40
  4. Step 4: Simplify right side
    197,285.40x = 25,169,959,362.24
  5. Step 5: Solve for x
    x = 25,169,959,362.24/197,285.40
  6. Step 6: Final answer
    x = 127,581.46

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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.