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Finding the Fourth Proportional to 284,650.08, 427,021.20 and 87,612

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Solution

The fourth proportional to 284,650.08, 427,021.20 and 87,612 is: 131,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,650.08 : 427,021.20 = 87,612 : x
  2. Step 2: Convert to fraction form
    284,650.08/427,021.20 = 87,612/x
  3. Step 3: Cross multiply
    284,650.08x = 427,021.20 × 87,612
  4. Step 4: Simplify right side
    284,650.08x = 37,412,181,374.40
  5. Step 5: Solve for x
    x = 37,412,181,374.40/284,650.08
  6. Step 6: Final answer
    x = 131,432.18

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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.