Home / 231,987,017.27-320,139,657.78-172,713,344.33

Finding the Fourth Proportional to 231,987,017.27, 320,139,657.78 and 172,713,344.33

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Solution

The fourth proportional to 231,987,017.27, 320,139,657.78 and 172,713,344.33 is: 238,342,608.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,987,017.27 : 320,139,657.78 = 172,713,344.33 : x
  2. Step 2: Convert to fraction form
    231,987,017.27/320,139,657.78 = 172,713,344.33/x
  3. Step 3: Cross multiply
    231,987,017.27x = 320,139,657.78 × 172,713,344.33
  4. Step 4: Simplify right side
    231,987,017.27x = 55,292,390,947,845,504
  5. Step 5: Solve for x
    x = 55,292,390,947,845,504/231,987,017.27
  6. Step 6: Final answer
    x = 238,342,608.99

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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.