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Finding the Fourth Proportional to 545,528.52, 818,489.88 and 279,414.36

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Solution

The fourth proportional to 545,528.52, 818,489.88 and 279,414.36 is: 419,222.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,528.52 : 818,489.88 = 279,414.36 : x
  2. Step 2: Convert to fraction form
    545,528.52/818,489.88 = 279,414.36/x
  3. Step 3: Cross multiply
    545,528.52x = 818,489.88 × 279,414.36
  4. Step 4: Simplify right side
    545,528.52x = 228,697,825,986.68
  5. Step 5: Solve for x
    x = 228,697,825,986.68/545,528.52
  6. Step 6: Final answer
    x = 419,222.49

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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.