Home / 399,932.48-551,908.77-218,644.43

Finding the Fourth Proportional to 399,932.48, 551,908.77 and 218,644.43

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Solution

The fourth proportional to 399,932.48, 551,908.77 and 218,644.43 is: 301,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,932.48 : 551,908.77 = 218,644.43 : x
  2. Step 2: Convert to fraction form
    399,932.48/551,908.77 = 218,644.43/x
  3. Step 3: Cross multiply
    399,932.48x = 551,908.77 × 218,644.43
  4. Step 4: Simplify right side
    399,932.48x = 120,671,775,669.11
  5. Step 5: Solve for x
    x = 120,671,775,669.11/399,932.48
  6. Step 6: Final answer
    x = 301,730.37

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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.