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Finding the Fourth Proportional to 399,416.00, 551,198.49 and 218,133.27

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Solution

The fourth proportional to 399,416.00, 551,198.49 and 218,133.27 is: 301,026.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,416.00 : 551,198.49 = 218,133.27 : x
  2. Step 2: Convert to fraction form
    399,416.00/551,198.49 = 218,133.27/x
  3. Step 3: Cross multiply
    399,416.00x = 551,198.49 × 218,133.27
  4. Step 4: Simplify right side
    399,416.00x = 120,234,728,224.76
  5. Step 5: Solve for x
    x = 120,234,728,224.76/399,416.00
  6. Step 6: Final answer
    x = 301,026.32

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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.