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Finding the Fourth Proportional to 288,879.66, 398,652.57 and 161,555.76

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Solution

The fourth proportional to 288,879.66, 398,652.57 and 161,555.76 is: 222,946.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,879.66 : 398,652.57 = 161,555.76 : x
  2. Step 2: Convert to fraction form
    288,879.66/398,652.57 = 161,555.76/x
  3. Step 3: Cross multiply
    288,879.66x = 398,652.57 × 161,555.76
  4. Step 4: Simplify right side
    288,879.66x = 64,404,618,922.30
  5. Step 5: Solve for x
    x = 64,404,618,922.30/288,879.66
  6. Step 6: Final answer
    x = 222,946.19

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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.