Home / 403,003.13-556,144.29-221,711.18

Finding the Fourth Proportional to 403,003.13, 556,144.29 and 221,711.18

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Solution

The fourth proportional to 403,003.13, 556,144.29 and 221,711.18 is: 305,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,003.13 : 556,144.29 = 221,711.18 : x
  2. Step 2: Convert to fraction form
    403,003.13/556,144.29 = 221,711.18/x
  3. Step 3: Cross multiply
    403,003.13x = 556,144.29 × 221,711.18
  4. Step 4: Simplify right side
    403,003.13x = 123,303,404,005.44
  5. Step 5: Solve for x
    x = 123,303,404,005.44/403,003.13
  6. Step 6: Final answer
    x = 305,961.41

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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.