Home / 258,827.37-388,334.48-90,372.51

Finding the Fourth Proportional to 258,827.37, 388,334.48 and 90,372.51

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Solution

The fourth proportional to 258,827.37, 388,334.48 and 90,372.51 is: 135,591.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,827.37 : 388,334.48 = 90,372.51 : x
  2. Step 2: Convert to fraction form
    258,827.37/388,334.48 = 90,372.51/x
  3. Step 3: Cross multiply
    258,827.37x = 388,334.48 × 90,372.51
  4. Step 4: Simplify right side
    258,827.37x = 35,094,761,225.28
  5. Step 5: Solve for x
    x = 35,094,761,225.28/258,827.37
  6. Step 6: Final answer
    x = 135,591.38

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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.