Home / 290,072.36-400,278.57-161,018.30

Finding the Fourth Proportional to 290,072.36, 400,278.57 and 161,018.30

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Solution

The fourth proportional to 290,072.36, 400,278.57 and 161,018.30 is: 222,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,072.36 : 400,278.57 = 161,018.30 : x
  2. Step 2: Convert to fraction form
    290,072.36/400,278.57 = 161,018.30/x
  3. Step 3: Cross multiply
    290,072.36x = 400,278.57 × 161,018.30
  4. Step 4: Simplify right side
    290,072.36x = 64,452,174,867.83
  5. Step 5: Solve for x
    x = 64,452,174,867.83/290,072.36
  6. Step 6: Final answer
    x = 222,193.44

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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.