Home / 398,856.23-551,138.41-303,196.85

Finding the Fourth Proportional to 398,856.23, 551,138.41 and 303,196.85

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Solution

The fourth proportional to 398,856.23, 551,138.41 and 303,196.85 is: 418,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,856.23 : 551,138.41 = 303,196.85 : x
  2. Step 2: Convert to fraction form
    398,856.23/551,138.41 = 303,196.85/x
  3. Step 3: Cross multiply
    398,856.23x = 551,138.41 × 303,196.85
  4. Step 4: Simplify right side
    398,856.23x = 167,103,429,826.01
  5. Step 5: Solve for x
    x = 167,103,429,826.01/398,856.23
  6. Step 6: Final answer
    x = 418,956.55

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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.