Home / 288,712.20-398,431.64-161,393.16

Finding the Fourth Proportional to 288,712.20, 398,431.64 and 161,393.16

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Solution

The fourth proportional to 288,712.20, 398,431.64 and 161,393.16 is: 222,727.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,712.20 : 398,431.64 = 161,393.16 : x
  2. Step 2: Convert to fraction form
    288,712.20/398,431.64 = 161,393.16/x
  3. Step 3: Cross multiply
    288,712.20x = 398,431.64 × 161,393.16
  4. Step 4: Simplify right side
    288,712.20x = 64,304,141,423.58
  5. Step 5: Solve for x
    x = 64,304,141,423.58/288,712.20
  6. Step 6: Final answer
    x = 222,727.48

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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.