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Finding the Fourth Proportional to 399,493.66, 551,158 and 236,115.88

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Solution

The fourth proportional to 399,493.66, 551,158 and 236,115.88 is: 325,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,493.66 : 551,158 = 236,115.88 : x
  2. Step 2: Convert to fraction form
    399,493.66/551,158 = 236,115.88/x
  3. Step 3: Cross multiply
    399,493.66x = 551,158 × 236,115.88
  4. Step 4: Simplify right side
    399,493.66x = 130,137,156,189.04
  5. Step 5: Solve for x
    x = 130,137,156,189.04/399,493.66
  6. Step 6: Final answer
    x = 325,755.25

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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.