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Finding the Fourth Proportional to 439,440.89, 659,213.27 and 139,816.41

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Solution

The fourth proportional to 439,440.89, 659,213.27 and 139,816.41 is: 209,741.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,440.89 : 659,213.27 = 139,816.41 : x
  2. Step 2: Convert to fraction form
    439,440.89/659,213.27 = 139,816.41/x
  3. Step 3: Cross multiply
    439,440.89x = 659,213.27 × 139,816.41
  4. Step 4: Simplify right side
    439,440.89x = 92,168,832,136.68
  5. Step 5: Solve for x
    x = 92,168,832,136.68/439,440.89
  6. Step 6: Final answer
    x = 209,741.14

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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.