Home / 403,015.32-556,161.12-221,723.34

Finding the Fourth Proportional to 403,015.32, 556,161.12 and 221,723.34

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Solution

The fourth proportional to 403,015.32, 556,161.12 and 221,723.34 is: 305,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,015.32 : 556,161.12 = 221,723.34 : x
  2. Step 2: Convert to fraction form
    403,015.32/556,161.12 = 221,723.34/x
  3. Step 3: Cross multiply
    403,015.32x = 556,161.12 × 221,723.34
  4. Step 4: Simplify right side
    403,015.32x = 123,313,901,104.54
  5. Step 5: Solve for x
    x = 123,313,901,104.54/403,015.32
  6. Step 6: Final answer
    x = 305,978.20

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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.