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Finding the Fourth Proportional to 515,096.80, 772,030.80 and 215,576.80

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Solution

The fourth proportional to 515,096.80, 772,030.80 and 215,576.80 is: 323,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,096.80 : 772,030.80 = 215,576.80 : x
  2. Step 2: Convert to fraction form
    515,096.80/772,030.80 = 215,576.80/x
  3. Step 3: Cross multiply
    515,096.80x = 772,030.80 × 215,576.80
  4. Step 4: Simplify right side
    515,096.80x = 166,431,929,365.44
  5. Step 5: Solve for x
    x = 166,431,929,365.44/515,096.80
  6. Step 6: Final answer
    x = 323,108.06

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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.