Home / 279,815.10-419,722.65-268,928.70

Finding the Fourth Proportional to 279,815.10, 419,722.65 and 268,928.70

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Solution

The fourth proportional to 279,815.10, 419,722.65 and 268,928.70 is: 403,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,815.10 : 419,722.65 = 268,928.70 : x
  2. Step 2: Convert to fraction form
    279,815.10/419,722.65 = 268,928.70/x
  3. Step 3: Cross multiply
    279,815.10x = 419,722.65 × 268,928.70
  4. Step 4: Simplify right side
    279,815.10x = 112,875,466,625.06
  5. Step 5: Solve for x
    x = 112,875,466,625.06/279,815.10
  6. Step 6: Final answer
    x = 403,393.05

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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.