Home / 258,331,285.42-387,389,186.29-81,022,744.31

Finding the Fourth Proportional to 258,331,285.42, 387,389,186.29 and 81,022,744.31

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Solution

The fourth proportional to 258,331,285.42, 387,389,186.29 and 81,022,744.31 is: 121,500,324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,331,285.42 : 387,389,186.29 = 81,022,744.31 : x
  2. Step 2: Convert to fraction form
    258,331,285.42/387,389,186.29 = 81,022,744.31/x
  3. Step 3: Cross multiply
    258,331,285.42x = 387,389,186.29 × 81,022,744.31
  4. Step 4: Simplify right side
    258,331,285.42x = 31,387,334,989,436,188
  5. Step 5: Solve for x
    x = 31,387,334,989,436,188/258,331,285.42
  6. Step 6: Final answer
    x = 121,500,324.43

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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.