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Finding the Fourth Proportional to 352,179.20, 527,491.20 and 289,971.20

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Solution

The fourth proportional to 352,179.20, 527,491.20 and 289,971.20 is: 434,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,179.20 : 527,491.20 = 289,971.20 : x
  2. Step 2: Convert to fraction form
    352,179.20/527,491.20 = 289,971.20/x
  3. Step 3: Cross multiply
    352,179.20x = 527,491.20 × 289,971.20
  4. Step 4: Simplify right side
    352,179.20x = 152,957,256,253.44
  5. Step 5: Solve for x
    x = 152,957,256,253.44/352,179.20
  6. Step 6: Final answer
    x = 434,316.55

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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.