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Finding the Fourth Proportional to 245,380.86, 338,415.66 and 169,021.76

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Solution

The fourth proportional to 245,380.86, 338,415.66 and 169,021.76 is: 233,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,380.86 : 338,415.66 = 169,021.76 : x
  2. Step 2: Convert to fraction form
    245,380.86/338,415.66 = 169,021.76/x
  3. Step 3: Cross multiply
    245,380.86x = 338,415.66 × 169,021.76
  4. Step 4: Simplify right side
    245,380.86x = 57,199,608,772.68
  5. Step 5: Solve for x
    x = 57,199,608,772.68/245,380.86
  6. Step 6: Final answer
    x = 233,105.42

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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.