Home / 227,120.20-340,680.30-143,139.40

Finding the Fourth Proportional to 227,120.20, 340,680.30 and 143,139.40

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Solution

The fourth proportional to 227,120.20, 340,680.30 and 143,139.40 is: 214,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,120.20 : 340,680.30 = 143,139.40 : x
  2. Step 2: Convert to fraction form
    227,120.20/340,680.30 = 143,139.40/x
  3. Step 3: Cross multiply
    227,120.20x = 340,680.30 × 143,139.40
  4. Step 4: Simplify right side
    227,120.20x = 48,764,773,733.82
  5. Step 5: Solve for x
    x = 48,764,773,733.82/227,120.20
  6. Step 6: Final answer
    x = 214,709.10

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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.