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Finding the Fourth Proportional to 354,512.17, 489,407.39 and 273,758.41

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Solution

The fourth proportional to 354,512.17, 489,407.39 and 273,758.41 is: 377,926.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,512.17 : 489,407.39 = 273,758.41 : x
  2. Step 2: Convert to fraction form
    354,512.17/489,407.39 = 273,758.41/x
  3. Step 3: Cross multiply
    354,512.17x = 489,407.39 × 273,758.41
  4. Step 4: Simplify right side
    354,512.17x = 133,979,388,389.53
  5. Step 5: Solve for x
    x = 133,979,388,389.53/354,512.17
  6. Step 6: Final answer
    x = 377,926.06

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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.