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Finding the Fourth Proportional to 363,563.78, 545,280 and 126,974.12

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Solution

The fourth proportional to 363,563.78, 545,280 and 126,974.12 is: 190,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,563.78 : 545,280 = 126,974.12 : x
  2. Step 2: Convert to fraction form
    363,563.78/545,280 = 126,974.12/x
  3. Step 3: Cross multiply
    363,563.78x = 545,280 × 126,974.12
  4. Step 4: Simplify right side
    363,563.78x = 69,236,448,153.60
  5. Step 5: Solve for x
    x = 69,236,448,153.60/363,563.78
  6. Step 6: Final answer
    x = 190,438.24

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1.5x scale

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.