Home / 258,767.97-388,188.40-90,263.72

Finding the Fourth Proportional to 258,767.97, 388,188.40 and 90,263.72

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Solution

The fourth proportional to 258,767.97, 388,188.40 and 90,263.72 is: 135,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,767.97 : 388,188.40 = 90,263.72 : x
  2. Step 2: Convert to fraction form
    258,767.97/388,188.40 = 90,263.72/x
  3. Step 3: Cross multiply
    258,767.97x = 388,188.40 × 90,263.72
  4. Step 4: Simplify right side
    258,767.97x = 35,039,327,775.34
  5. Step 5: Solve for x
    x = 35,039,327,775.34/258,767.97
  6. Step 6: Final answer
    x = 135,408.29

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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.