Home / 268,979.40-370,844.68-220,400.72

Finding the Fourth Proportional to 268,979.40, 370,844.68 and 220,400.72

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Solution

The fourth proportional to 268,979.40, 370,844.68 and 220,400.72 is: 303,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,979.40 : 370,844.68 = 220,400.72 : x
  2. Step 2: Convert to fraction form
    268,979.40/370,844.68 = 220,400.72/x
  3. Step 3: Cross multiply
    268,979.40x = 370,844.68 × 220,400.72
  4. Step 4: Simplify right side
    268,979.40x = 81,734,434,480.17
  5. Step 5: Solve for x
    x = 81,734,434,480.17/268,979.40
  6. Step 6: Final answer
    x = 303,868.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.