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Finding the Fourth Proportional to 315,819.01, 435,529.01 and 206,760.61

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Solution

The fourth proportional to 315,819.01, 435,529.01 and 206,760.61 is: 285,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,819.01 : 435,529.01 = 206,760.61 : x
  2. Step 2: Convert to fraction form
    315,819.01/435,529.01 = 206,760.61/x
  3. Step 3: Cross multiply
    315,819.01x = 435,529.01 × 206,760.61
  4. Step 4: Simplify right side
    315,819.01x = 90,050,243,208.38
  5. Step 5: Solve for x
    x = 90,050,243,208.38/315,819.01
  6. Step 6: Final answer
    x = 285,132.44

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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.