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Finding the Fourth Proportional to 288,879.54, 398,652.40 and 161,555.64

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Solution

The fourth proportional to 288,879.54, 398,652.40 and 161,555.64 is: 222,946.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,879.54 : 398,652.40 = 161,555.64 : x
  2. Step 2: Convert to fraction form
    288,879.54/398,652.40 = 161,555.64/x
  3. Step 3: Cross multiply
    288,879.54x = 398,652.40 × 161,555.64
  4. Step 4: Simplify right side
    288,879.54x = 64,404,543,619.54
  5. Step 5: Solve for x
    x = 64,404,543,619.54/288,879.54
  6. Step 6: Final answer
    x = 222,946.02

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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.