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Finding the Fourth Proportional to 339,371.80, 508,722.90 and 189,683.80

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Solution

The fourth proportional to 339,371.80, 508,722.90 and 189,683.80 is: 284,338.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,371.80 : 508,722.90 = 189,683.80 : x
  2. Step 2: Convert to fraction form
    339,371.80/508,722.90 = 189,683.80/x
  3. Step 3: Cross multiply
    339,371.80x = 508,722.90 × 189,683.80
  4. Step 4: Simplify right side
    339,371.80x = 96,496,492,819.02
  5. Step 5: Solve for x
    x = 96,496,492,819.02/339,371.80
  6. Step 6: Final answer
    x = 284,338.57

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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.