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Finding the Fourth Proportional to 289,772.50, 399,887.49 and 168,997.54

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Solution

The fourth proportional to 289,772.50, 399,887.49 and 168,997.54 is: 233,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,772.50 : 399,887.49 = 168,997.54 : x
  2. Step 2: Convert to fraction form
    289,772.50/399,887.49 = 168,997.54/x
  3. Step 3: Cross multiply
    289,772.50x = 399,887.49 × 168,997.54
  4. Step 4: Simplify right side
    289,772.50x = 67,580,002,086.77
  5. Step 5: Solve for x
    x = 67,580,002,086.77/289,772.50
  6. Step 6: Final answer
    x = 233,217.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.