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Finding the Fourth Proportional to 326,366.88, 489,213.57 and 136,937.25

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Solution

The fourth proportional to 326,366.88, 489,213.57 and 136,937.25 is: 205,264.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,366.88 : 489,213.57 = 136,937.25 : x
  2. Step 2: Convert to fraction form
    326,366.88/489,213.57 = 136,937.25/x
  3. Step 3: Cross multiply
    326,366.88x = 489,213.57 × 136,937.25
  4. Step 4: Simplify right side
    326,366.88x = 66,991,560,938.48
  5. Step 5: Solve for x
    x = 66,991,560,938.48/326,366.88
  6. Step 6: Final answer
    x = 205,264.58

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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.