Home / 403,403.20-556,691.78-222,111.40

Finding the Fourth Proportional to 403,403.20, 556,691.78 and 222,111.40

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Solution

The fourth proportional to 403,403.20, 556,691.78 and 222,111.40 is: 306,511.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,403.20 : 556,691.78 = 222,111.40 : x
  2. Step 2: Convert to fraction form
    403,403.20/556,691.78 = 222,111.40/x
  3. Step 3: Cross multiply
    403,403.20x = 556,691.78 × 222,111.40
  4. Step 4: Simplify right side
    403,403.20x = 123,647,590,624.29
  5. Step 5: Solve for x
    x = 123,647,590,624.29/403,403.20
  6. Step 6: Final answer
    x = 306,511.18

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1.5x scale

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.