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Finding the Fourth Proportional to 259,160.78, 388,739.61 and 67,035.21

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Solution

The fourth proportional to 259,160.78, 388,739.61 and 67,035.21 is: 100,552.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,160.78 : 388,739.61 = 67,035.21 : x
  2. Step 2: Convert to fraction form
    259,160.78/388,739.61 = 67,035.21/x
  3. Step 3: Cross multiply
    259,160.78x = 388,739.61 × 67,035.21
  4. Step 4: Simplify right side
    259,160.78x = 26,059,241,391.67
  5. Step 5: Solve for x
    x = 26,059,241,391.67/259,160.78
  6. Step 6: Final answer
    x = 100,552.41

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1.5x scale

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.