Home / 289,974.40-434,961.60-268,979.20

Finding the Fourth Proportional to 289,974.40, 434,961.60 and 268,979.20

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Solution

The fourth proportional to 289,974.40, 434,961.60 and 268,979.20 is: 403,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,974.40 : 434,961.60 = 268,979.20 : x
  2. Step 2: Convert to fraction form
    289,974.40/434,961.60 = 268,979.20/x
  3. Step 3: Cross multiply
    289,974.40x = 434,961.60 × 268,979.20
  4. Step 4: Simplify right side
    289,974.40x = 116,995,623,198.72
  5. Step 5: Solve for x
    x = 116,995,623,198.72/289,974.40
  6. Step 6: Final answer
    x = 403,468.80

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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.