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Finding the Fourth Proportional to 352,546.60, 528,042.30 and 212,060.20

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Solution

The fourth proportional to 352,546.60, 528,042.30 and 212,060.20 is: 317,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,546.60 : 528,042.30 = 212,060.20 : x
  2. Step 2: Convert to fraction form
    352,546.60/528,042.30 = 212,060.20/x
  3. Step 3: Cross multiply
    352,546.60x = 528,042.30 × 212,060.20
  4. Step 4: Simplify right side
    352,546.60x = 111,976,755,746.46
  5. Step 5: Solve for x
    x = 111,976,755,746.46/352,546.60
  6. Step 6: Final answer
    x = 317,622.57

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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.