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Finding the Fourth Proportional to 351,651.78, 485,278.88 and 190,507.50

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Solution

The fourth proportional to 351,651.78, 485,278.88 and 190,507.50 is: 262,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,651.78 : 485,278.88 = 190,507.50 : x
  2. Step 2: Convert to fraction form
    351,651.78/485,278.88 = 190,507.50/x
  3. Step 3: Cross multiply
    351,651.78x = 485,278.88 × 190,507.50
  4. Step 4: Simplify right side
    351,651.78x = 92,449,265,279.06
  5. Step 5: Solve for x
    x = 92,449,265,279.06/351,651.78
  6. Step 6: Final answer
    x = 262,900.04

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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.