Home / 287,256.71-396,584.01-255,333.33

Finding the Fourth Proportional to 287,256.71, 396,584.01 and 255,333.33

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Solution

The fourth proportional to 287,256.71, 396,584.01 and 255,333.33 is: 352,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,256.71 : 396,584.01 = 255,333.33 : x
  2. Step 2: Convert to fraction form
    287,256.71/396,584.01 = 255,333.33/x
  3. Step 3: Cross multiply
    287,256.71x = 396,584.01 × 255,333.33
  4. Step 4: Simplify right side
    287,256.71x = 101,261,115,898.05
  5. Step 5: Solve for x
    x = 101,261,115,898.05/287,256.71
  6. Step 6: Final answer
    x = 352,510.88

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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.