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Finding the Fourth Proportional to 312,091.20, 468,136.80 and 298,969.20

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Solution

The fourth proportional to 312,091.20, 468,136.80 and 298,969.20 is: 448,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,091.20 : 468,136.80 = 298,969.20 : x
  2. Step 2: Convert to fraction form
    312,091.20/468,136.80 = 298,969.20/x
  3. Step 3: Cross multiply
    312,091.20x = 468,136.80 × 298,969.20
  4. Step 4: Simplify right side
    312,091.20x = 139,958,484,586.56
  5. Step 5: Solve for x
    x = 139,958,484,586.56/312,091.20
  6. Step 6: Final answer
    x = 448,453.80

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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.