Home / 263,319.66-395,020.45-85,785.34

Finding the Fourth Proportional to 263,319.66, 395,020.45 and 85,785.34

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Solution

The fourth proportional to 263,319.66, 395,020.45 and 85,785.34 is: 128,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,319.66 : 395,020.45 = 85,785.34 : x
  2. Step 2: Convert to fraction form
    263,319.66/395,020.45 = 85,785.34/x
  3. Step 3: Cross multiply
    263,319.66x = 395,020.45 × 85,785.34
  4. Step 4: Simplify right side
    263,319.66x = 33,886,963,610.20
  5. Step 5: Solve for x
    x = 33,886,963,610.20/263,319.66
  6. Step 6: Final answer
    x = 128,691.35

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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.