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Finding the Fourth Proportional to 355,578.60, 533,982.30 and 189,690.60

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Solution

The fourth proportional to 355,578.60, 533,982.30 and 189,690.60 is: 284,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,578.60 : 533,982.30 = 189,690.60 : x
  2. Step 2: Convert to fraction form
    355,578.60/533,982.30 = 189,690.60/x
  3. Step 3: Cross multiply
    355,578.60x = 533,982.30 × 189,690.60
  4. Step 4: Simplify right side
    355,578.60x = 101,291,422,876.38
  5. Step 5: Solve for x
    x = 101,291,422,876.38/355,578.60
  6. Step 6: Final answer
    x = 284,863.66

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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.