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Finding the Fourth Proportional to 203,161.60, 280,224.26 and 139,388.68

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Solution

The fourth proportional to 203,161.60, 280,224.26 and 139,388.68 is: 192,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,161.60 : 280,224.26 = 139,388.68 : x
  2. Step 2: Convert to fraction form
    203,161.60/280,224.26 = 139,388.68/x
  3. Step 3: Cross multiply
    203,161.60x = 280,224.26 × 139,388.68
  4. Step 4: Simplify right side
    203,161.60x = 39,060,089,705.38
  5. Step 5: Solve for x
    x = 39,060,089,705.38/203,161.60
  6. Step 6: Final answer
    x = 192,261.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.