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Finding the Fourth Proportional to 354,513.11, 489,408.68 and 273,759.35

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Solution

The fourth proportional to 354,513.11, 489,408.68 and 273,759.35 is: 377,927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,513.11 : 489,408.68 = 273,759.35 : x
  2. Step 2: Convert to fraction form
    354,513.11/489,408.68 = 273,759.35/x
  3. Step 3: Cross multiply
    354,513.11x = 489,408.68 × 273,759.35
  4. Step 4: Simplify right side
    354,513.11x = 133,980,200,358.51
  5. Step 5: Solve for x
    x = 133,980,200,358.51/354,513.11
  6. Step 6: Final answer
    x = 377,927.36

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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.