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Finding the Fourth Proportional to 339,266.80, 508,565.40 and 189,578.80

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Solution

The fourth proportional to 339,266.80, 508,565.40 and 189,578.80 is: 284,181.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,266.80 : 508,565.40 = 189,578.80 : x
  2. Step 2: Convert to fraction form
    339,266.80/508,565.40 = 189,578.80/x
  3. Step 3: Cross multiply
    339,266.80x = 508,565.40 × 189,578.80
  4. Step 4: Simplify right side
    339,266.80x = 96,413,218,253.52
  5. Step 5: Solve for x
    x = 96,413,218,253.52/339,266.80
  6. Step 6: Final answer
    x = 284,181.12

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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.