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Finding the Fourth Proportional to 352,906.60, 529,878.30 and 212,938.60

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Solution

The fourth proportional to 352,906.60, 529,878.30 and 212,938.60 is: 319,720.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,906.60 : 529,878.30 = 212,938.60 : x
  2. Step 2: Convert to fraction form
    352,906.60/529,878.30 = 212,938.60/x
  3. Step 3: Cross multiply
    352,906.60x = 529,878.30 × 212,938.60
  4. Step 4: Simplify right side
    352,906.60x = 112,831,543,372.38
  5. Step 5: Solve for x
    x = 112,831,543,372.38/352,906.60
  6. Step 6: Final answer
    x = 319,720.69

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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.