Home / 287,667.60-396,983.12-160,351.26

Finding the Fourth Proportional to 287,667.60, 396,983.12 and 160,351.26

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Solution

The fourth proportional to 287,667.60, 396,983.12 and 160,351.26 is: 221,285.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,667.60 : 396,983.12 = 160,351.26 : x
  2. Step 2: Convert to fraction form
    287,667.60/396,983.12 = 160,351.26/x
  3. Step 3: Cross multiply
    287,667.60x = 396,983.12 × 160,351.26
  4. Step 4: Simplify right side
    287,667.60x = 63,656,743,490.73
  5. Step 5: Solve for x
    x = 63,656,743,490.73/287,667.60
  6. Step 6: Final answer
    x = 221,285.76

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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.