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Finding the Fourth Proportional to 354,540.99, 489,269.69 and 193,396.76

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Solution

The fourth proportional to 354,540.99, 489,269.69 and 193,396.76 is: 266,889.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,540.99 : 489,269.69 = 193,396.76 : x
  2. Step 2: Convert to fraction form
    354,540.99/489,269.69 = 193,396.76/x
  3. Step 3: Cross multiply
    354,540.99x = 489,269.69 × 193,396.76
  4. Step 4: Simplify right side
    354,540.99x = 94,623,169,398.87
  5. Step 5: Solve for x
    x = 94,623,169,398.87/354,540.99
  6. Step 6: Final answer
    x = 266,889.22

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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.