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Finding the Fourth Proportional to 326,356.16, 489,523.97 and 89,696.79

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Solution

The fourth proportional to 326,356.16, 489,523.97 and 89,696.79 is: 134,542.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,356.16 : 489,523.97 = 89,696.79 : x
  2. Step 2: Convert to fraction form
    326,356.16/489,523.97 = 89,696.79/x
  3. Step 3: Cross multiply
    326,356.16x = 489,523.97 × 89,696.79
  4. Step 4: Simplify right side
    326,356.16x = 43,908,728,961.30
  5. Step 5: Solve for x
    x = 43,908,728,961.30/326,356.16
  6. Step 6: Final answer
    x = 134,542.37

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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.