Home / 331,982.19-498,078.99-139,958.15

Finding the Fourth Proportional to 331,982.19, 498,078.99 and 139,958.15

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Solution

The fourth proportional to 331,982.19, 498,078.99 and 139,958.15 is: 209,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,982.19 : 498,078.99 = 139,958.15 : x
  2. Step 2: Convert to fraction form
    331,982.19/498,078.99 = 139,958.15/x
  3. Step 3: Cross multiply
    331,982.19x = 498,078.99 × 139,958.15
  4. Step 4: Simplify right side
    331,982.19x = 69,710,211,503.87
  5. Step 5: Solve for x
    x = 69,710,211,503.87/331,982.19
  6. Step 6: Final answer
    x = 209,981.78

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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.