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Finding the Fourth Proportional to 288,712.08, 398,431.47 and 161,393.04

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Solution

The fourth proportional to 288,712.08, 398,431.47 and 161,393.04 is: 222,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,712.08 : 398,431.47 = 161,393.04 : x
  2. Step 2: Convert to fraction form
    288,712.08/398,431.47 = 161,393.04/x
  3. Step 3: Cross multiply
    288,712.08x = 398,431.47 × 161,393.04
  4. Step 4: Simplify right side
    288,712.08x = 64,304,066,174.97
  5. Step 5: Solve for x
    x = 64,304,066,174.97/288,712.08
  6. Step 6: Final answer
    x = 222,727.31

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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.