Home / 403,131.08-556,306.95-221,826.06

Finding the Fourth Proportional to 403,131.08, 556,306.95 and 221,826.06

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Solution

The fourth proportional to 403,131.08, 556,306.95 and 221,826.06 is: 306,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,131.08 : 556,306.95 = 221,826.06 : x
  2. Step 2: Convert to fraction form
    403,131.08/556,306.95 = 221,826.06/x
  3. Step 3: Cross multiply
    403,131.08x = 556,306.95 × 221,826.06
  4. Step 4: Simplify right side
    403,131.08x = 123,403,378,869.12
  5. Step 5: Solve for x
    x = 123,403,378,869.12/403,131.08
  6. Step 6: Final answer
    x = 306,112.29

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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.