Home / 401,431.97-553,976.89-220,145.18

Finding the Fourth Proportional to 401,431.97, 553,976.89 and 220,145.18

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Solution

The fourth proportional to 401,431.97, 553,976.89 and 220,145.18 is: 303,800.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,431.97 : 553,976.89 = 220,145.18 : x
  2. Step 2: Convert to fraction form
    401,431.97/553,976.89 = 220,145.18/x
  3. Step 3: Cross multiply
    401,431.97x = 553,976.89 × 220,145.18
  4. Step 4: Simplify right side
    401,431.97x = 121,955,338,844.64
  5. Step 5: Solve for x
    x = 121,955,338,844.64/401,431.97
  6. Step 6: Final answer
    x = 303,800.76

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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.