Home / 287,103.96-430,677.90-87,441.36

Finding the Fourth Proportional to 287,103.96, 430,677.90 and 87,441.36

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Solution

The fourth proportional to 287,103.96, 430,677.90 and 87,441.36 is: 131,168.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,103.96 : 430,677.90 = 87,441.36 : x
  2. Step 2: Convert to fraction form
    287,103.96/430,677.90 = 87,441.36/x
  3. Step 3: Cross multiply
    287,103.96x = 430,677.90 × 87,441.36
  4. Step 4: Simplify right side
    287,103.96x = 37,659,061,297.94
  5. Step 5: Solve for x
    x = 37,659,061,297.94/287,103.96
  6. Step 6: Final answer
    x = 131,168.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.