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Finding the Fourth Proportional to 481,564.80, 721,569.60 and 303,753.60

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Solution

The fourth proportional to 481,564.80, 721,569.60 and 303,753.60 is: 455,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,564.80 : 721,569.60 = 303,753.60 : x
  2. Step 2: Convert to fraction form
    481,564.80/721,569.60 = 303,753.60/x
  3. Step 3: Cross multiply
    481,564.80x = 721,569.60 × 303,753.60
  4. Step 4: Simplify right side
    481,564.80x = 219,179,363,650.56
  5. Step 5: Solve for x
    x = 219,179,363,650.56/481,564.80
  6. Step 6: Final answer
    x = 455,139.92

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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.