Home / 288,542.72-398,181.60-161,219.36

Finding the Fourth Proportional to 288,542.72, 398,181.60 and 161,219.36

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Solution

The fourth proportional to 288,542.72, 398,181.60 and 161,219.36 is: 222,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,542.72 : 398,181.60 = 161,219.36 : x
  2. Step 2: Convert to fraction form
    288,542.72/398,181.60 = 161,219.36/x
  3. Step 3: Cross multiply
    288,542.72x = 398,181.60 × 161,219.36
  4. Step 4: Simplify right side
    288,542.72x = 64,194,582,715.78
  5. Step 5: Solve for x
    x = 64,194,582,715.78/288,542.72
  6. Step 6: Final answer
    x = 222,478.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.