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Finding the Fourth Proportional to 212,418.60, 318,627.90 and 175,093.80

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Solution

The fourth proportional to 212,418.60, 318,627.90 and 175,093.80 is: 262,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,418.60 : 318,627.90 = 175,093.80 : x
  2. Step 2: Convert to fraction form
    212,418.60/318,627.90 = 175,093.80/x
  3. Step 3: Cross multiply
    212,418.60x = 318,627.90 × 175,093.80
  4. Step 4: Simplify right side
    212,418.60x = 55,789,769,797.02
  5. Step 5: Solve for x
    x = 55,789,769,797.02/212,418.60
  6. Step 6: Final answer
    x = 262,640.70

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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.