Home / 399,717.76-551,617.73-218,437.33

Finding the Fourth Proportional to 399,717.76, 551,617.73 and 218,437.33

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Solution

The fourth proportional to 399,717.76, 551,617.73 and 218,437.33 is: 301,447.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,717.76 : 551,617.73 = 218,437.33 : x
  2. Step 2: Convert to fraction form
    399,717.76/551,617.73 = 218,437.33/x
  3. Step 3: Cross multiply
    399,717.76x = 551,617.73 × 218,437.33
  4. Step 4: Simplify right side
    399,717.76x = 120,493,904,121.86
  5. Step 5: Solve for x
    x = 120,493,904,121.86/399,717.76
  6. Step 6: Final answer
    x = 301,447.46

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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.