Home / 403,257.24-556,497-221,987.40

Finding the Fourth Proportional to 403,257.24, 556,497 and 221,987.40

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Solution

The fourth proportional to 403,257.24, 556,497 and 221,987.40 is: 306,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,257.24 : 556,497 = 221,987.40 : x
  2. Step 2: Convert to fraction form
    403,257.24/556,497 = 221,987.40/x
  3. Step 3: Cross multiply
    403,257.24x = 556,497 × 221,987.40
  4. Step 4: Simplify right side
    403,257.24x = 123,535,322,137.80
  5. Step 5: Solve for x
    x = 123,535,322,137.80/403,257.24
  6. Step 6: Final answer
    x = 306,343.72

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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.