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Finding the Fourth Proportional to 326,612.54, 489,792.83 and 126,906.63

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Solution

The fourth proportional to 326,612.54, 489,792.83 and 126,906.63 is: 190,311.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,612.54 : 489,792.83 = 126,906.63 : x
  2. Step 2: Convert to fraction form
    326,612.54/489,792.83 = 126,906.63/x
  3. Step 3: Cross multiply
    326,612.54x = 489,792.83 × 126,906.63
  4. Step 4: Simplify right side
    326,612.54x = 62,157,956,818.93
  5. Step 5: Solve for x
    x = 62,157,956,818.93/326,612.54
  6. Step 6: Final answer
    x = 190,311.00

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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.