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Finding the Fourth Proportional to 339,414.48, 508,682.16 and 139,508.64

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Solution

The fourth proportional to 339,414.48, 508,682.16 and 139,508.64 is: 209,082.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,414.48 : 508,682.16 = 139,508.64 : x
  2. Step 2: Convert to fraction form
    339,414.48/508,682.16 = 139,508.64/x
  3. Step 3: Cross multiply
    339,414.48x = 508,682.16 × 139,508.64
  4. Step 4: Simplify right side
    339,414.48x = 70,965,556,333.86
  5. Step 5: Solve for x
    x = 70,965,556,333.86/339,414.48
  6. Step 6: Final answer
    x = 209,082.29

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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.