Home / 258,360.54-387,540.09-71,371.50

Finding the Fourth Proportional to 258,360.54, 387,540.09 and 71,371.50

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Solution

The fourth proportional to 258,360.54, 387,540.09 and 71,371.50 is: 107,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,360.54 : 387,540.09 = 71,371.50 : x
  2. Step 2: Convert to fraction form
    258,360.54/387,540.09 = 71,371.50/x
  3. Step 3: Cross multiply
    258,360.54x = 387,540.09 × 71,371.50
  4. Step 4: Simplify right side
    258,360.54x = 27,659,317,533.44
  5. Step 5: Solve for x
    x = 27,659,317,533.44/258,360.54
  6. Step 6: Final answer
    x = 107,057.05

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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.