Home / 399,979.09-551,979.79-238,804.07

Finding the Fourth Proportional to 399,979.09, 551,979.79 and 238,804.07

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Solution

The fourth proportional to 399,979.09, 551,979.79 and 238,804.07 is: 329,554.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,979.09 : 551,979.79 = 238,804.07 : x
  2. Step 2: Convert to fraction form
    399,979.09/551,979.79 = 238,804.07/x
  3. Step 3: Cross multiply
    399,979.09x = 551,979.79 × 238,804.07
  4. Step 4: Simplify right side
    399,979.09x = 131,815,021,192.69
  5. Step 5: Solve for x
    x = 131,815,021,192.69/399,979.09
  6. Step 6: Final answer
    x = 329,554.78

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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.