Home / 240,324.96-331,689.60-139,781.28

Finding the Fourth Proportional to 240,324.96, 331,689.60 and 139,781.28

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Solution

The fourth proportional to 240,324.96, 331,689.60 and 139,781.28 is: 192,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,324.96 : 331,689.60 = 139,781.28 : x
  2. Step 2: Convert to fraction form
    240,324.96/331,689.60 = 139,781.28/x
  3. Step 3: Cross multiply
    240,324.96x = 331,689.60 × 139,781.28
  4. Step 4: Simplify right side
    240,324.96x = 46,363,996,850.69
  5. Step 5: Solve for x
    x = 46,363,996,850.69/240,324.96
  6. Step 6: Final answer
    x = 192,922.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.