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Finding the Fourth Proportional to 326,384.88, 489,600.27 and 136,653.78

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Solution

The fourth proportional to 326,384.88, 489,600.27 and 136,653.78 is: 204,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,384.88 : 489,600.27 = 136,653.78 : x
  2. Step 2: Convert to fraction form
    326,384.88/489,600.27 = 136,653.78/x
  3. Step 3: Cross multiply
    326,384.88x = 489,600.27 × 136,653.78
  4. Step 4: Simplify right side
    326,384.88x = 66,905,727,584.52
  5. Step 5: Solve for x
    x = 66,905,727,584.52/326,384.88
  6. Step 6: Final answer
    x = 204,990.28

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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.