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Finding the Fourth Proportional to 545,803.20, 818,666.43 and 204,181.45

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Solution

The fourth proportional to 545,803.20, 818,666.43 and 204,181.45 is: 306,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,803.20 : 818,666.43 = 204,181.45 : x
  2. Step 2: Convert to fraction form
    545,803.20/818,666.43 = 204,181.45/x
  3. Step 3: Cross multiply
    545,803.20x = 818,666.43 × 204,181.45
  4. Step 4: Simplify right side
    545,803.20x = 167,156,493,629.48
  5. Step 5: Solve for x
    x = 167,156,493,629.48/545,803.20
  6. Step 6: Final answer
    x = 306,257.81

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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.