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Finding the Fourth Proportional to 339,310.80, 508,631.40 and 189,622.80

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Solution

The fourth proportional to 339,310.80, 508,631.40 and 189,622.80 is: 284,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,310.80 : 508,631.40 = 189,622.80 : x
  2. Step 2: Convert to fraction form
    339,310.80/508,631.40 = 189,622.80/x
  3. Step 3: Cross multiply
    339,310.80x = 508,631.40 × 189,622.80
  4. Step 4: Simplify right side
    339,310.80x = 96,448,110,235.92
  5. Step 5: Solve for x
    x = 96,448,110,235.92/339,310.80
  6. Step 6: Final answer
    x = 284,247.10

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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.