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Finding the Fourth Proportional to 408,410.37, 612,615.69 and 168,520.77

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Solution

The fourth proportional to 408,410.37, 612,615.69 and 168,520.77 is: 252,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,410.37 : 612,615.69 = 168,520.77 : x
  2. Step 2: Convert to fraction form
    408,410.37/612,615.69 = 168,520.77/x
  3. Step 3: Cross multiply
    408,410.37x = 612,615.69 × 168,520.77
  4. Step 4: Simplify right side
    408,410.37x = 103,238,467,792.88
  5. Step 5: Solve for x
    x = 103,238,467,792.88/408,410.37
  6. Step 6: Final answer
    x = 252,781.21

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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.