Home / 290,243.04-400,513.68-161,188.80

Finding the Fourth Proportional to 290,243.04, 400,513.68 and 161,188.80

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Solution

The fourth proportional to 290,243.04, 400,513.68 and 161,188.80 is: 222,428.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,243.04 : 400,513.68 = 161,188.80 : x
  2. Step 2: Convert to fraction form
    290,243.04/400,513.68 = 161,188.80/x
  3. Step 3: Cross multiply
    290,243.04x = 400,513.68 × 161,188.80
  4. Step 4: Simplify right side
    290,243.04x = 64,558,319,462.78
  5. Step 5: Solve for x
    x = 64,558,319,462.78/290,243.04
  6. Step 6: Final answer
    x = 222,428.48

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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.