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Finding the Fourth Proportional to 399,447.27, 551,163.60 and 236,130.12

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Solution

The fourth proportional to 399,447.27, 551,163.60 and 236,130.12 is: 325,816.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,447.27 : 551,163.60 = 236,130.12 : x
  2. Step 2: Convert to fraction form
    399,447.27/551,163.60 = 236,130.12/x
  3. Step 3: Cross multiply
    399,447.27x = 551,163.60 × 236,130.12
  4. Step 4: Simplify right side
    399,447.27x = 130,146,327,007.63
  5. Step 5: Solve for x
    x = 130,146,327,007.63/399,447.27
  6. Step 6: Final answer
    x = 325,816.04

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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.