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Finding the Fourth Proportional to 326,487.92, 489,674.52 and 89,773.52

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Solution

The fourth proportional to 326,487.92, 489,674.52 and 89,773.52 is: 134,644.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,487.92 : 489,674.52 = 89,773.52 : x
  2. Step 2: Convert to fraction form
    326,487.92/489,674.52 = 89,773.52/x
  3. Step 3: Cross multiply
    326,487.92x = 489,674.52 × 89,773.52
  4. Step 4: Simplify right side
    326,487.92x = 43,959,805,314.71
  5. Step 5: Solve for x
    x = 43,959,805,314.71/326,487.92
  6. Step 6: Final answer
    x = 134,644.51

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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.