Home / 401,778.12-554,448.66-220,491.72

Finding the Fourth Proportional to 401,778.12, 554,448.66 and 220,491.72

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Solution

The fourth proportional to 401,778.12, 554,448.66 and 220,491.72 is: 304,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,778.12 : 554,448.66 = 220,491.72 : x
  2. Step 2: Convert to fraction form
    401,778.12/554,448.66 = 220,491.72/x
  3. Step 3: Cross multiply
    401,778.12x = 554,448.66 × 220,491.72
  4. Step 4: Simplify right side
    401,778.12x = 122,251,338,695.10
  5. Step 5: Solve for x
    x = 122,251,338,695.10/401,778.12
  6. Step 6: Final answer
    x = 304,275.75

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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.