Home / 400,967.20-553,393.68-231,168.16

Finding the Fourth Proportional to 400,967.20, 553,393.68 and 231,168.16

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Solution

The fourth proportional to 400,967.20, 553,393.68 and 231,168.16 is: 319,046.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,967.20 : 553,393.68 = 231,168.16 : x
  2. Step 2: Convert to fraction form
    400,967.20/553,393.68 = 231,168.16/x
  3. Step 3: Cross multiply
    400,967.20x = 553,393.68 × 231,168.16
  4. Step 4: Simplify right side
    400,967.20x = 127,926,998,761.23
  5. Step 5: Solve for x
    x = 127,926,998,761.23/400,967.20
  6. Step 6: Final answer
    x = 319,046.04

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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.