Home / 275,785.20-380,583.60-153,277.56

Finding the Fourth Proportional to 275,785.20, 380,583.60 and 153,277.56

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Solution

The fourth proportional to 275,785.20, 380,583.60 and 153,277.56 is: 211,523.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,785.20 : 380,583.60 = 153,277.56 : x
  2. Step 2: Convert to fraction form
    275,785.20/380,583.60 = 153,277.56/x
  3. Step 3: Cross multiply
    275,785.20x = 380,583.60 × 153,277.56
  4. Step 4: Simplify right side
    275,785.20x = 58,334,925,584.02
  5. Step 5: Solve for x
    x = 58,334,925,584.02/275,785.20
  6. Step 6: Final answer
    x = 211,523.05

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1.5x scale

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.