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Finding the Fourth Proportional to 353,626.86, 488,015.60 and 217,739.22

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Solution

The fourth proportional to 353,626.86, 488,015.60 and 217,739.22 is: 300,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,626.86 : 488,015.60 = 217,739.22 : x
  2. Step 2: Convert to fraction form
    353,626.86/488,015.60 = 217,739.22/x
  3. Step 3: Cross multiply
    353,626.86x = 488,015.60 × 217,739.22
  4. Step 4: Simplify right side
    353,626.86x = 106,260,136,091.83
  5. Step 5: Solve for x
    x = 106,260,136,091.83/353,626.86
  6. Step 6: Final answer
    x = 300,486.61

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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.