Home / 401,507.85-554,081.61-220,221.27

Finding the Fourth Proportional to 401,507.85, 554,081.61 and 220,221.27

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Solution

The fourth proportional to 401,507.85, 554,081.61 and 220,221.27 is: 303,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,507.85 : 554,081.61 = 220,221.27 : x
  2. Step 2: Convert to fraction form
    401,507.85/554,081.61 = 220,221.27/x
  3. Step 3: Cross multiply
    401,507.85x = 554,081.61 × 220,221.27
  4. Step 4: Simplify right side
    401,507.85x = 122,020,555,837.85
  5. Step 5: Solve for x
    x = 122,020,555,837.85/401,507.85
  6. Step 6: Final answer
    x = 303,905.78

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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.