Home / 275,785.40-380,589-153,289.25

Finding the Fourth Proportional to 275,785.40, 380,589 and 153,289.25

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Solution

The fourth proportional to 275,785.40, 380,589 and 153,289.25 is: 211,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,785.40 : 380,589 = 153,289.25 : x
  2. Step 2: Convert to fraction form
    275,785.40/380,589 = 153,289.25/x
  3. Step 3: Cross multiply
    275,785.40x = 380,589 × 153,289.25
  4. Step 4: Simplify right side
    275,785.40x = 58,340,203,319.72
  5. Step 5: Solve for x
    x = 58,340,203,319.72/275,785.40
  6. Step 6: Final answer
    x = 211,542.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.