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Finding the Fourth Proportional to 545,805.05, 818,865.42 and 225,897.78

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Solution

The fourth proportional to 545,805.05, 818,865.42 and 225,897.78 is: 338,912.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,805.05 : 818,865.42 = 225,897.78 : x
  2. Step 2: Convert to fraction form
    545,805.05/818,865.42 = 225,897.78/x
  3. Step 3: Cross multiply
    545,805.05x = 818,865.42 × 225,897.78
  4. Step 4: Simplify right side
    545,805.05x = 184,979,880,496.77
  5. Step 5: Solve for x
    x = 184,979,880,496.77/545,805.05
  6. Step 6: Final answer
    x = 338,912.00

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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.