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Finding the Fourth Proportional to 374,682.20, 562,023.30 and 280,203.80

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Solution

The fourth proportional to 374,682.20, 562,023.30 and 280,203.80 is: 420,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,682.20 : 562,023.30 = 280,203.80 : x
  2. Step 2: Convert to fraction form
    374,682.20/562,023.30 = 280,203.80/x
  3. Step 3: Cross multiply
    374,682.20x = 562,023.30 × 280,203.80
  4. Step 4: Simplify right side
    374,682.20x = 157,481,064,348.54
  5. Step 5: Solve for x
    x = 157,481,064,348.54/374,682.20
  6. Step 6: Final answer
    x = 420,305.70

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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.