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Finding the Fourth Proportional to 351,722.81, 485,377.90 and 190,577.73

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Solution

The fourth proportional to 351,722.81, 485,377.90 and 190,577.73 is: 262,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,722.81 : 485,377.90 = 190,577.73 : x
  2. Step 2: Convert to fraction form
    351,722.81/485,377.90 = 190,577.73/x
  3. Step 3: Cross multiply
    351,722.81x = 485,377.90 × 190,577.73
  4. Step 4: Simplify right side
    351,722.81x = 92,502,218,059.64
  5. Step 5: Solve for x
    x = 92,502,218,059.64/351,722.81
  6. Step 6: Final answer
    x = 262,997.50

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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.