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Finding the Fourth Proportional to 354,589.87, 489,324.30 and 193,444.87

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Solution

The fourth proportional to 354,589.87, 489,324.30 and 193,444.87 is: 266,948.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,589.87 : 489,324.30 = 193,444.87 : x
  2. Step 2: Convert to fraction form
    354,589.87/489,324.30 = 193,444.87/x
  3. Step 3: Cross multiply
    354,589.87x = 489,324.30 × 193,444.87
  4. Step 4: Simplify right side
    354,589.87x = 94,657,275,601.34
  5. Step 5: Solve for x
    x = 94,657,275,601.34/354,589.87
  6. Step 6: Final answer
    x = 266,948.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.