Home / 331,235.20-496,852.80-81,917.20

Finding the Fourth Proportional to 331,235.20, 496,852.80 and 81,917.20

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Solution

The fourth proportional to 331,235.20, 496,852.80 and 81,917.20 is: 122,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,235.20 : 496,852.80 = 81,917.20 : x
  2. Step 2: Convert to fraction form
    331,235.20/496,852.80 = 81,917.20/x
  3. Step 3: Cross multiply
    331,235.20x = 496,852.80 × 81,917.20
  4. Step 4: Simplify right side
    331,235.20x = 40,700,790,188.16
  5. Step 5: Solve for x
    x = 40,700,790,188.16/331,235.20
  6. Step 6: Final answer
    x = 122,875.80

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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.