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Finding the Fourth Proportional to 351,634.84, 485,255.68 and 190,490.60

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Solution

The fourth proportional to 351,634.84, 485,255.68 and 190,490.60 is: 262,876.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,634.84 : 485,255.68 = 190,490.60 : x
  2. Step 2: Convert to fraction form
    351,634.84/485,255.68 = 190,490.60/x
  3. Step 3: Cross multiply
    351,634.84x = 485,255.68 × 190,490.60
  4. Step 4: Simplify right side
    351,634.84x = 92,436,646,373.52
  5. Step 5: Solve for x
    x = 92,436,646,373.52/351,634.84
  6. Step 6: Final answer
    x = 262,876.82

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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.