Home / 809,969.20-1,214,937.40-210,917.12

Finding the Fourth Proportional to 809,969.20, 1,214,937.40 and 210,917.12

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Solution

The fourth proportional to 809,969.20, 1,214,937.40 and 210,917.12 is: 316,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,969.20 : 1,214,937.40 = 210,917.12 : x
  2. Step 2: Convert to fraction form
    809,969.20/1,214,937.40 = 210,917.12/x
  3. Step 3: Cross multiply
    809,969.20x = 1,214,937.40 × 210,917.12
  4. Step 4: Simplify right side
    809,969.20x = 256,251,097,388.29
  5. Step 5: Solve for x
    x = 256,251,097,388.29/809,969.20
  6. Step 6: Final answer
    x = 316,371.41

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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.