Home / 331,208.20-496,812.30-81,890.20

Finding the Fourth Proportional to 331,208.20, 496,812.30 and 81,890.20

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Solution

The fourth proportional to 331,208.20, 496,812.30 and 81,890.20 is: 122,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,208.20 : 496,812.30 = 81,890.20 : x
  2. Step 2: Convert to fraction form
    331,208.20/496,812.30 = 81,890.20/x
  3. Step 3: Cross multiply
    331,208.20x = 496,812.30 × 81,890.20
  4. Step 4: Simplify right side
    331,208.20x = 40,684,058,609.46
  5. Step 5: Solve for x
    x = 40,684,058,609.46/331,208.20
  6. Step 6: Final answer
    x = 122,835.30

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1.5x scale

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.