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Finding the Fourth Proportional to 437,206.80, 655,908.90 and 133,628.52

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Solution

The fourth proportional to 437,206.80, 655,908.90 and 133,628.52 is: 200,472.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,206.80 : 655,908.90 = 133,628.52 : x
  2. Step 2: Convert to fraction form
    437,206.80/655,908.90 = 133,628.52/x
  3. Step 3: Cross multiply
    437,206.80x = 655,908.90 × 133,628.52
  4. Step 4: Simplify right side
    437,206.80x = 87,648,135,561.83
  5. Step 5: Solve for x
    x = 87,648,135,561.83/437,206.80
  6. Step 6: Final answer
    x = 200,472.95

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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.