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Finding the Fourth Proportional to 203,300.79, 280,556.73 and 112,658.27

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Solution

The fourth proportional to 203,300.79, 280,556.73 and 112,658.27 is: 155,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,300.79 : 280,556.73 = 112,658.27 : x
  2. Step 2: Convert to fraction form
    203,300.79/280,556.73 = 112,658.27/x
  3. Step 3: Cross multiply
    203,300.79x = 280,556.73 × 112,658.27
  4. Step 4: Simplify right side
    203,300.79x = 31,607,035,305.68
  5. Step 5: Solve for x
    x = 31,607,035,305.68/203,300.79
  6. Step 6: Final answer
    x = 155,469.32

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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.