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Finding the Fourth Proportional to 401,357.52, 553,879.80 and 220,086

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Solution

The fourth proportional to 401,357.52, 553,879.80 and 220,086 is: 303,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,357.52 : 553,879.80 = 220,086 : x
  2. Step 2: Convert to fraction form
    401,357.52/553,879.80 = 220,086/x
  3. Step 3: Cross multiply
    401,357.52x = 553,879.80 × 220,086
  4. Step 4: Simplify right side
    401,357.52x = 121,901,189,662.80
  5. Step 5: Solve for x
    x = 121,901,189,662.80/401,357.52
  6. Step 6: Final answer
    x = 303,722.20

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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.