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Finding the Fourth Proportional to 351,489.48, 485,055.95 and 190,344.79

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Solution

The fourth proportional to 351,489.48, 485,055.95 and 190,344.79 is: 262,676.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,489.48 : 485,055.95 = 190,344.79 : x
  2. Step 2: Convert to fraction form
    351,489.48/485,055.95 = 190,344.79/x
  3. Step 3: Cross multiply
    351,489.48x = 485,055.95 × 190,344.79
  4. Step 4: Simplify right side
    351,489.48x = 92,327,869,867.16
  5. Step 5: Solve for x
    x = 92,327,869,867.16/351,489.48
  6. Step 6: Final answer
    x = 262,676.06

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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.