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Finding the Fourth Proportional to 351,489.89, 485,055.09 and 190,344.90

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Solution

The fourth proportional to 351,489.89, 485,055.09 and 190,344.90 is: 262,675.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,489.89 : 485,055.09 = 190,344.90 : x
  2. Step 2: Convert to fraction form
    351,489.89/485,055.09 = 190,344.90/x
  3. Step 3: Cross multiply
    351,489.89x = 485,055.09 × 190,344.90
  4. Step 4: Simplify right side
    351,489.89x = 92,327,762,507.01
  5. Step 5: Solve for x
    x = 92,327,762,507.01/351,489.89
  6. Step 6: Final answer
    x = 262,675.44

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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.