Home / 290,072.86-400,279.26-161,018.80

Finding the Fourth Proportional to 290,072.86, 400,279.26 and 161,018.80

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Solution

The fourth proportional to 290,072.86, 400,279.26 and 161,018.80 is: 222,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,072.86 : 400,279.26 = 161,018.80 : x
  2. Step 2: Convert to fraction form
    290,072.86/400,279.26 = 161,018.80/x
  3. Step 3: Cross multiply
    290,072.86x = 400,279.26 × 161,018.80
  4. Step 4: Simplify right side
    290,072.86x = 64,452,486,110.09
  5. Step 5: Solve for x
    x = 64,452,486,110.09/290,072.86
  6. Step 6: Final answer
    x = 222,194.13

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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.