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Finding the Fourth Proportional to 352,528.20, 528,879.78 and 165,321

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Solution

The fourth proportional to 352,528.20, 528,879.78 and 165,321 is: 248,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,528.20 : 528,879.78 = 165,321 : x
  2. Step 2: Convert to fraction form
    352,528.20/528,879.78 = 165,321/x
  3. Step 3: Cross multiply
    352,528.20x = 528,879.78 × 165,321
  4. Step 4: Simplify right side
    352,528.20x = 87,434,934,109.38
  5. Step 5: Solve for x
    x = 87,434,934,109.38/352,528.20
  6. Step 6: Final answer
    x = 248,022.52

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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.