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Finding the Fourth Proportional to 203,300.78, 280,556.73 and 112,658.25

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Solution

The fourth proportional to 203,300.78, 280,556.73 and 112,658.25 is: 155,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,300.78 : 280,556.73 = 112,658.25 : x
  2. Step 2: Convert to fraction form
    203,300.78/280,556.73 = 112,658.25/x
  3. Step 3: Cross multiply
    203,300.78x = 280,556.73 × 112,658.25
  4. Step 4: Simplify right side
    203,300.78x = 31,607,029,805.05
  5. Step 5: Solve for x
    x = 31,607,029,805.05/203,300.78
  6. Step 6: Final answer
    x = 155,469.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.