Home / 290,199.79-400,470.08-161,131.55

Finding the Fourth Proportional to 290,199.79, 400,470.08 and 161,131.55

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Solution

The fourth proportional to 290,199.79, 400,470.08 and 161,131.55 is: 222,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,199.79 : 400,470.08 = 161,131.55 : x
  2. Step 2: Convert to fraction form
    290,199.79/400,470.08 = 161,131.55/x
  3. Step 3: Cross multiply
    290,199.79x = 400,470.08 × 161,131.55
  4. Step 4: Simplify right side
    290,199.79x = 64,528,365,289.98
  5. Step 5: Solve for x
    x = 64,528,365,289.98/290,199.79
  6. Step 6: Final answer
    x = 222,358.42

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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.