Home / 287,255.56-396,214.66-261,659.45

Finding the Fourth Proportional to 287,255.56, 396,214.66 and 261,659.45

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Solution

The fourth proportional to 287,255.56, 396,214.66 and 261,659.45 is: 360,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,255.56 : 396,214.66 = 261,659.45 : x
  2. Step 2: Convert to fraction form
    287,255.56/396,214.66 = 261,659.45/x
  3. Step 3: Cross multiply
    287,255.56x = 396,214.66 × 261,659.45
  4. Step 4: Simplify right side
    287,255.56x = 103,673,310,353.93
  5. Step 5: Solve for x
    x = 103,673,310,353.93/287,255.56
  6. Step 6: Final answer
    x = 360,909.68

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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.