Home / 208,836.80-313,049.28-133,743.68

Finding the Fourth Proportional to 208,836.80, 313,049.28 and 133,743.68

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Solution

The fourth proportional to 208,836.80, 313,049.28 and 133,743.68 is: 200,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,836.80 : 313,049.28 = 133,743.68 : x
  2. Step 2: Convert to fraction form
    208,836.80/313,049.28 = 133,743.68/x
  3. Step 3: Cross multiply
    208,836.80x = 313,049.28 × 133,743.68
  4. Step 4: Simplify right side
    208,836.80x = 41,868,362,728.55
  5. Step 5: Solve for x
    x = 41,868,362,728.55/208,836.80
  6. Step 6: Final answer
    x = 200,483.64

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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.