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Finding the Fourth Proportional to 258,520.80, 386,859.60 and 179,263.20

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Solution

The fourth proportional to 258,520.80, 386,859.60 and 179,263.20 is: 268,255.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,520.80 : 386,859.60 = 179,263.20 : x
  2. Step 2: Convert to fraction form
    258,520.80/386,859.60 = 179,263.20/x
  3. Step 3: Cross multiply
    258,520.80x = 386,859.60 × 179,263.20
  4. Step 4: Simplify right side
    258,520.80x = 69,349,689,846.72
  5. Step 5: Solve for x
    x = 69,349,689,846.72/258,520.80
  6. Step 6: Final answer
    x = 268,255.75

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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.