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Finding the Fourth Proportional to 289,910.30, 434,865.45 and 270,227.30

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Solution

The fourth proportional to 289,910.30, 434,865.45 and 270,227.30 is: 405,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,910.30 : 434,865.45 = 270,227.30 : x
  2. Step 2: Convert to fraction form
    289,910.30/434,865.45 = 270,227.30/x
  3. Step 3: Cross multiply
    289,910.30x = 434,865.45 × 270,227.30
  4. Step 4: Simplify right side
    289,910.30x = 117,512,516,416.79
  5. Step 5: Solve for x
    x = 117,512,516,416.79/289,910.30
  6. Step 6: Final answer
    x = 405,340.95

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1.5x scale

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.