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Finding the Fourth Proportional to 258,555.58, 387,822.09 and 81,058.54

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Solution

The fourth proportional to 258,555.58, 387,822.09 and 81,058.54 is: 121,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,555.58 : 387,822.09 = 81,058.54 : x
  2. Step 2: Convert to fraction form
    258,555.58/387,822.09 = 81,058.54/x
  3. Step 3: Cross multiply
    258,555.58x = 387,822.09 × 81,058.54
  4. Step 4: Simplify right side
    258,555.58x = 31,436,292,395.15
  5. Step 5: Solve for x
    x = 31,436,292,395.15/258,555.58
  6. Step 6: Final answer
    x = 121,584.27

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1.5x scale

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.