Home / 515,743.56-773,361.09-212,082.30

Finding the Fourth Proportional to 515,743.56, 773,361.09 and 212,082.30

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Solution

The fourth proportional to 515,743.56, 773,361.09 and 212,082.30 is: 318,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,743.56 : 773,361.09 = 212,082.30 : x
  2. Step 2: Convert to fraction form
    515,743.56/773,361.09 = 212,082.30/x
  3. Step 3: Cross multiply
    515,743.56x = 773,361.09 × 212,082.30
  4. Step 4: Simplify right side
    515,743.56x = 164,016,198,697.71
  5. Step 5: Solve for x
    x = 164,016,198,697.71/515,743.56
  6. Step 6: Final answer
    x = 318,018.90

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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.