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Finding the Fourth Proportional to 545,190.52, 817,917.54 and 171,213.52

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Solution

The fourth proportional to 545,190.52, 817,917.54 and 171,213.52 is: 256,861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,190.52 : 817,917.54 = 171,213.52 : x
  2. Step 2: Convert to fraction form
    545,190.52/817,917.54 = 171,213.52/x
  3. Step 3: Cross multiply
    545,190.52x = 817,917.54 × 171,213.52
  4. Step 4: Simplify right side
    545,190.52x = 140,038,541,093.14
  5. Step 5: Solve for x
    x = 140,038,541,093.14/545,190.52
  6. Step 6: Final answer
    x = 256,861.66

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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.