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Finding the Fourth Proportional to 449,814.68, 674,622.40 and 129,896.90

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Solution

The fourth proportional to 449,814.68, 674,622.40 and 129,896.90 is: 194,816.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,814.68 : 674,622.40 = 129,896.90 : x
  2. Step 2: Convert to fraction form
    449,814.68/674,622.40 = 129,896.90/x
  3. Step 3: Cross multiply
    449,814.68x = 674,622.40 × 129,896.90
  4. Step 4: Simplify right side
    449,814.68x = 87,631,358,430.56
  5. Step 5: Solve for x
    x = 87,631,358,430.56/449,814.68
  6. Step 6: Final answer
    x = 194,816.58

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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.