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Finding the Fourth Proportional to 339,213.60, 508,834.23 and 86,500.64

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Solution

The fourth proportional to 339,213.60, 508,834.23 and 86,500.64 is: 129,754.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,213.60 : 508,834.23 = 86,500.64 : x
  2. Step 2: Convert to fraction form
    339,213.60/508,834.23 = 86,500.64/x
  3. Step 3: Cross multiply
    339,213.60x = 508,834.23 × 86,500.64
  4. Step 4: Simplify right side
    339,213.60x = 44,014,486,548.91
  5. Step 5: Solve for x
    x = 44,014,486,548.91/339,213.60
  6. Step 6: Final answer
    x = 129,754.49

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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.