Home / 403,217.70-556,448.04-221,928.36

Finding the Fourth Proportional to 403,217.70, 556,448.04 and 221,928.36

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Solution

The fourth proportional to 403,217.70, 556,448.04 and 221,928.36 is: 306,265.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,217.70 : 556,448.04 = 221,928.36 : x
  2. Step 2: Convert to fraction form
    403,217.70/556,448.04 = 221,928.36/x
  3. Step 3: Cross multiply
    403,217.70x = 556,448.04 × 221,928.36
  4. Step 4: Simplify right side
    403,217.70x = 123,491,600,942.41
  5. Step 5: Solve for x
    x = 123,491,600,942.41/403,217.70
  6. Step 6: Final answer
    x = 306,265.33

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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.