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Finding the Fourth Proportional to 324,125.60, 486,188.40 and 87,467.90

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Solution

The fourth proportional to 324,125.60, 486,188.40 and 87,467.90 is: 131,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,125.60 : 486,188.40 = 87,467.90 : x
  2. Step 2: Convert to fraction form
    324,125.60/486,188.40 = 87,467.90/x
  3. Step 3: Cross multiply
    324,125.60x = 486,188.40 × 87,467.90
  4. Step 4: Simplify right side
    324,125.60x = 42,525,878,352.36
  5. Step 5: Solve for x
    x = 42,525,878,352.36/324,125.60
  6. Step 6: Final answer
    x = 131,201.85

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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.