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Finding the Fourth Proportional to 258,797.15, 387,634.31 and 125,397.64

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Solution

The fourth proportional to 258,797.15, 387,634.31 and 125,397.64 is: 187,824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,797.15 : 387,634.31 = 125,397.64 : x
  2. Step 2: Convert to fraction form
    258,797.15/387,634.31 = 125,397.64/x
  3. Step 3: Cross multiply
    258,797.15x = 387,634.31 × 125,397.64
  4. Step 4: Simplify right side
    258,797.15x = 48,608,427,657.03
  5. Step 5: Solve for x
    x = 48,608,427,657.03/258,797.15
  6. Step 6: Final answer
    x = 187,824.43

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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.