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Finding the Fourth Proportional to 352,136.78, 486,137.04 and 275,492.96

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Solution

The fourth proportional to 352,136.78, 486,137.04 and 275,492.96 is: 380,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,136.78 : 486,137.04 = 275,492.96 : x
  2. Step 2: Convert to fraction form
    352,136.78/486,137.04 = 275,492.96/x
  3. Step 3: Cross multiply
    352,136.78x = 486,137.04 × 275,492.96
  4. Step 4: Simplify right side
    352,136.78x = 133,927,332,115.24
  5. Step 5: Solve for x
    x = 133,927,332,115.24/352,136.78
  6. Step 6: Final answer
    x = 380,327.59

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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.