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Finding the Fourth Proportional to 576,090.20, 863,406.30 and 220,629.80

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Solution

The fourth proportional to 576,090.20, 863,406.30 and 220,629.80 is: 330,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,090.20 : 863,406.30 = 220,629.80 : x
  2. Step 2: Convert to fraction form
    576,090.20/863,406.30 = 220,629.80/x
  3. Step 3: Cross multiply
    576,090.20x = 863,406.30 × 220,629.80
  4. Step 4: Simplify right side
    576,090.20x = 190,493,159,287.74
  5. Step 5: Solve for x
    x = 190,493,159,287.74/576,090.20
  6. Step 6: Final answer
    x = 330,665.51

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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.