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Finding the Fourth Proportional to 351,453.80, 485,006.50 and 190,310.12

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Solution

The fourth proportional to 351,453.80, 485,006.50 and 190,310.12 is: 262,628.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,453.80 : 485,006.50 = 190,310.12 : x
  2. Step 2: Convert to fraction form
    351,453.80/485,006.50 = 190,310.12/x
  3. Step 3: Cross multiply
    351,453.80x = 485,006.50 × 190,310.12
  4. Step 4: Simplify right side
    351,453.80x = 92,301,645,215.78
  5. Step 5: Solve for x
    x = 92,301,645,215.78/351,453.80
  6. Step 6: Final answer
    x = 262,628.10

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1.5x scale

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.