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Finding the Fourth Proportional to 206,434.05, 309,651.54 and 56,676.39

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Solution

The fourth proportional to 206,434.05, 309,651.54 and 56,676.39 is: 85,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,434.05 : 309,651.54 = 56,676.39 : x
  2. Step 2: Convert to fraction form
    206,434.05/309,651.54 = 56,676.39/x
  3. Step 3: Cross multiply
    206,434.05x = 309,651.54 × 56,676.39
  4. Step 4: Simplify right side
    206,434.05x = 17,549,931,445.14
  5. Step 5: Solve for x
    x = 17,549,931,445.14/206,434.05
  6. Step 6: Final answer
    x = 85,014.71

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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.