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Finding the Fourth Proportional to 518,629.58, 777,500.61 and 199,010.80

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Solution

The fourth proportional to 518,629.58, 777,500.61 and 199,010.80 is: 298,345.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,629.58 : 777,500.61 = 199,010.80 : x
  2. Step 2: Convert to fraction form
    518,629.58/777,500.61 = 199,010.80/x
  3. Step 3: Cross multiply
    518,629.58x = 777,500.61 × 199,010.80
  4. Step 4: Simplify right side
    518,629.58x = 154,731,015,706.55
  5. Step 5: Solve for x
    x = 154,731,015,706.55/518,629.58
  6. Step 6: Final answer
    x = 298,345.92

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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.