Home / 401,789.81-554,452.47-220,504.74

Finding the Fourth Proportional to 401,789.81, 554,452.47 and 220,504.74

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Solution

The fourth proportional to 401,789.81, 554,452.47 and 220,504.74 is: 304,286.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,789.81 : 554,452.47 = 220,504.74 : x
  2. Step 2: Convert to fraction form
    401,789.81/554,452.47 = 220,504.74/x
  3. Step 3: Cross multiply
    401,789.81x = 554,452.47 × 220,504.74
  4. Step 4: Simplify right side
    401,789.81x = 122,259,397,739.71
  5. Step 5: Solve for x
    x = 122,259,397,739.71/401,789.81
  6. Step 6: Final answer
    x = 304,286.95

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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.