Home / 814,064.05-1,221,154.38-215,019.24

Finding the Fourth Proportional to 814,064.05, 1,221,154.38 and 215,019.24

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Solution

The fourth proportional to 814,064.05, 1,221,154.38 and 215,019.24 is: 322,544.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,064.05 : 1,221,154.38 = 215,019.24 : x
  2. Step 2: Convert to fraction form
    814,064.05/1,221,154.38 = 215,019.24/x
  3. Step 3: Cross multiply
    814,064.05x = 1,221,154.38 × 215,019.24
  4. Step 4: Simplify right side
    814,064.05x = 262,571,686,710.27
  5. Step 5: Solve for x
    x = 262,571,686,710.27/814,064.05
  6. Step 6: Final answer
    x = 322,544.26

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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.