Home / 403,016.32-556,162.48-221,724.36

Finding the Fourth Proportional to 403,016.32, 556,162.48 and 221,724.36

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Solution

The fourth proportional to 403,016.32, 556,162.48 and 221,724.36 is: 305,979.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,016.32 : 556,162.48 = 221,724.36 : x
  2. Step 2: Convert to fraction form
    403,016.32/556,162.48 = 221,724.36/x
  3. Step 3: Cross multiply
    403,016.32x = 556,162.48 × 221,724.36
  4. Step 4: Simplify right side
    403,016.32x = 123,314,769,934.01
  5. Step 5: Solve for x
    x = 123,314,769,934.01/403,016.32
  6. Step 6: Final answer
    x = 305,979.59

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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.