Home / 403,364.80-556,638.78-222,072.90

Finding the Fourth Proportional to 403,364.80, 556,638.78 and 222,072.90

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Solution

The fourth proportional to 403,364.80, 556,638.78 and 222,072.90 is: 306,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,364.80 : 556,638.78 = 222,072.90 : x
  2. Step 2: Convert to fraction form
    403,364.80/556,638.78 = 222,072.90/x
  3. Step 3: Cross multiply
    403,364.80x = 556,638.78 × 222,072.90
  4. Step 4: Simplify right side
    403,364.80x = 123,614,388,127.06
  5. Step 5: Solve for x
    x = 123,614,388,127.06/403,364.80
  6. Step 6: Final answer
    x = 306,458.05

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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.