Home / 420,258.44-579,945.20-229,271.80

Finding the Fourth Proportional to 420,258.44, 579,945.20 and 229,271.80

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Solution

The fourth proportional to 420,258.44, 579,945.20 and 229,271.80 is: 316,388.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,258.44 : 579,945.20 = 229,271.80 : x
  2. Step 2: Convert to fraction form
    420,258.44/579,945.20 = 229,271.80/x
  3. Step 3: Cross multiply
    420,258.44x = 579,945.20 × 229,271.80
  4. Step 4: Simplify right side
    420,258.44x = 132,965,079,905.36
  5. Step 5: Solve for x
    x = 132,965,079,905.36/420,258.44
  6. Step 6: Final answer
    x = 316,388.84

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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.