Home / 287,434.10-396,671.31-160,109.75

Finding the Fourth Proportional to 287,434.10, 396,671.31 and 160,109.75

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Solution

The fourth proportional to 287,434.10, 396,671.31 and 160,109.75 is: 220,958.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,434.10 : 396,671.31 = 160,109.75 : x
  2. Step 2: Convert to fraction form
    287,434.10/396,671.31 = 160,109.75/x
  3. Step 3: Cross multiply
    287,434.10x = 396,671.31 × 160,109.75
  4. Step 4: Simplify right side
    287,434.10x = 63,510,942,292.92
  5. Step 5: Solve for x
    x = 63,510,942,292.92/287,434.10
  6. Step 6: Final answer
    x = 220,958.28

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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.