Home / 287,258.96-396,587.12-255,335.58

Finding the Fourth Proportional to 287,258.96, 396,587.12 and 255,335.58

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Solution

The fourth proportional to 287,258.96, 396,587.12 and 255,335.58 is: 352,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,258.96 : 396,587.12 = 255,335.58 : x
  2. Step 2: Convert to fraction form
    287,258.96/396,587.12 = 255,335.58/x
  3. Step 3: Cross multiply
    287,258.96x = 396,587.12 × 255,335.58
  4. Step 4: Simplify right side
    287,258.96x = 101,262,801,029.05
  5. Step 5: Solve for x
    x = 101,262,801,029.05/287,258.96
  6. Step 6: Final answer
    x = 352,513.98

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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.