Home / 813,119.69-1,219,568.81-214,030.68

Finding the Fourth Proportional to 813,119.69, 1,219,568.81 and 214,030.68

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Solution

The fourth proportional to 813,119.69, 1,219,568.81 and 214,030.68 is: 321,016.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,119.69 : 1,219,568.81 = 214,030.68 : x
  2. Step 2: Convert to fraction form
    813,119.69/1,219,568.81 = 214,030.68/x
  3. Step 3: Cross multiply
    813,119.69x = 1,219,568.81 × 214,030.68
  4. Step 4: Simplify right side
    813,119.69x = 261,025,140,640.94
  5. Step 5: Solve for x
    x = 261,025,140,640.94/813,119.69
  6. Step 6: Final answer
    x = 321,016.88

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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.