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Finding the Fourth Proportional to 288,614.90, 398,287.38 and 161,290.46

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Solution

The fourth proportional to 288,614.90, 398,287.38 and 161,290.46 is: 222,580.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,614.90 : 398,287.38 = 161,290.46 : x
  2. Step 2: Convert to fraction form
    288,614.90/398,287.38 = 161,290.46/x
  3. Step 3: Cross multiply
    288,614.90x = 398,287.38 × 161,290.46
  4. Step 4: Simplify right side
    288,614.90x = 64,239,954,732.39
  5. Step 5: Solve for x
    x = 64,239,954,732.39/288,614.90
  6. Step 6: Final answer
    x = 222,580.17

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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.