Home / 339,874.24-509,513.28-129,372.16

Finding the Fourth Proportional to 339,874.24, 509,513.28 and 129,372.16

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Solution

The fourth proportional to 339,874.24, 509,513.28 and 129,372.16 is: 193,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,874.24 : 509,513.28 = 129,372.16 : x
  2. Step 2: Convert to fraction form
    339,874.24/509,513.28 = 129,372.16/x
  3. Step 3: Cross multiply
    339,874.24x = 509,513.28 × 129,372.16
  4. Step 4: Simplify right side
    339,874.24x = 65,916,833,582.28
  5. Step 5: Solve for x
    x = 65,916,833,582.28/339,874.24
  6. Step 6: Final answer
    x = 193,944.78

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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.