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Finding the Fourth Proportional to 437,207.80, 655,910.40 and 133,629.52

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Solution

The fourth proportional to 437,207.80, 655,910.40 and 133,629.52 is: 200,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,207.80 : 655,910.40 = 133,629.52 : x
  2. Step 2: Convert to fraction form
    437,207.80/655,910.40 = 133,629.52/x
  3. Step 3: Cross multiply
    437,207.80x = 655,910.40 × 133,629.52
  4. Step 4: Simplify right side
    437,207.80x = 87,648,991,915.01
  5. Step 5: Solve for x
    x = 87,648,991,915.01/437,207.80
  6. Step 6: Final answer
    x = 200,474.45

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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.