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Finding the Fourth Proportional to 351,776.71, 485,453.55 and 190,631.53

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Solution

The fourth proportional to 351,776.71, 485,453.55 and 190,631.53 is: 263,072.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,776.71 : 485,453.55 = 190,631.53 : x
  2. Step 2: Convert to fraction form
    351,776.71/485,453.55 = 190,631.53/x
  3. Step 3: Cross multiply
    351,776.71x = 485,453.55 × 190,631.53
  4. Step 4: Simplify right side
    351,776.71x = 92,542,752,980.43
  5. Step 5: Solve for x
    x = 92,542,752,980.43/351,776.71
  6. Step 6: Final answer
    x = 263,072.43

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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.