Home / 491,961.87-738,128.70-192,656.34

Finding the Fourth Proportional to 491,961.87, 738,128.70 and 192,656.34

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Solution

The fourth proportional to 491,961.87, 738,128.70 and 192,656.34 is: 289,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,961.87 : 738,128.70 = 192,656.34 : x
  2. Step 2: Convert to fraction form
    491,961.87/738,128.70 = 192,656.34/x
  3. Step 3: Cross multiply
    491,961.87x = 738,128.70 × 192,656.34
  4. Step 4: Simplify right side
    491,961.87x = 142,205,173,790.96
  5. Step 5: Solve for x
    x = 142,205,173,790.96/491,961.87
  6. Step 6: Final answer
    x = 289,057.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.