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Finding the Fourth Proportional to 326,388.08, 489,582.12 and 89,755.76

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Solution

The fourth proportional to 326,388.08, 489,582.12 and 89,755.76 is: 134,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,388.08 : 489,582.12 = 89,755.76 : x
  2. Step 2: Convert to fraction form
    326,388.08/489,582.12 = 89,755.76/x
  3. Step 3: Cross multiply
    326,388.08x = 489,582.12 × 89,755.76
  4. Step 4: Simplify right side
    326,388.08x = 43,942,815,263.01
  5. Step 5: Solve for x
    x = 43,942,815,263.01/326,388.08
  6. Step 6: Final answer
    x = 134,633.64

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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.