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Finding the Fourth Proportional to 351,548.40, 485,138.04 and 190,403.04

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Solution

The fourth proportional to 351,548.40, 485,138.04 and 190,403.04 is: 262,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,548.40 : 485,138.04 = 190,403.04 : x
  2. Step 2: Convert to fraction form
    351,548.40/485,138.04 = 190,403.04/x
  3. Step 3: Cross multiply
    351,548.40x = 485,138.04 × 190,403.04
  4. Step 4: Simplify right side
    351,548.40x = 92,371,757,635.64
  5. Step 5: Solve for x
    x = 92,371,757,635.64/351,548.40
  6. Step 6: Final answer
    x = 262,756.87

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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.