Home / 258,546,990.31-387,791,837.42-92,543,865.21

Finding the Fourth Proportional to 258,546,990.31, 387,791,837.42 and 92,543,865.21

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Solution

The fourth proportional to 258,546,990.31, 387,791,837.42 and 92,543,865.21 is: 138,805,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,546,990.31 : 387,791,837.42 = 92,543,865.21 : x
  2. Step 2: Convert to fraction form
    258,546,990.31/387,791,837.42 = 92,543,865.21/x
  3. Step 3: Cross multiply
    258,546,990.31x = 387,791,837.42 × 92,543,865.21
  4. Step 4: Simplify right side
    258,546,990.31x = 35,887,755,531,271,996
  5. Step 5: Solve for x
    x = 35,887,755,531,271,996/258,546,990.31
  6. Step 6: Final answer
    x = 138,805,543.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.