Home / 290,143.17-400,379.56-161,074.12

Finding the Fourth Proportional to 290,143.17, 400,379.56 and 161,074.12

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Solution

The fourth proportional to 290,143.17, 400,379.56 and 161,074.12 is: 222,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,143.17 : 400,379.56 = 161,074.12 : x
  2. Step 2: Convert to fraction form
    290,143.17/400,379.56 = 161,074.12/x
  3. Step 3: Cross multiply
    290,143.17x = 400,379.56 × 161,074.12
  4. Step 4: Simplify right side
    290,143.17x = 64,490,785,994.80
  5. Step 5: Solve for x
    x = 64,490,785,994.80/290,143.17
  6. Step 6: Final answer
    x = 222,272.28

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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.