Home / 509,619.20-764,234.40-154,515.20

Finding the Fourth Proportional to 509,619.20, 764,234.40 and 154,515.20

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Solution

The fourth proportional to 509,619.20, 764,234.40 and 154,515.20 is: 231,713.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,619.20 : 764,234.40 = 154,515.20 : x
  2. Step 2: Convert to fraction form
    509,619.20/764,234.40 = 154,515.20/x
  3. Step 3: Cross multiply
    509,619.20x = 764,234.40 × 154,515.20
  4. Step 4: Simplify right side
    509,619.20x = 118,085,831,162.88
  5. Step 5: Solve for x
    x = 118,085,831,162.88/509,619.20
  6. Step 6: Final answer
    x = 231,713.86

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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.