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Finding the Fourth Proportional to 228,153.90, 342,289.17 and 87,874.86

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Solution

The fourth proportional to 228,153.90, 342,289.17 and 87,874.86 is: 131,834.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,153.90 : 342,289.17 = 87,874.86 : x
  2. Step 2: Convert to fraction form
    228,153.90/342,289.17 = 87,874.86/x
  3. Step 3: Cross multiply
    228,153.90x = 342,289.17 × 87,874.86
  4. Step 4: Simplify right side
    228,153.90x = 30,078,612,893.27
  5. Step 5: Solve for x
    x = 30,078,612,893.27/228,153.90
  6. Step 6: Final answer
    x = 131,834.75

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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.