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Finding the Fourth Proportional to 209,579.92, 314,408.76 and 69,339.76

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Solution

The fourth proportional to 209,579.92, 314,408.76 and 69,339.76 is: 104,022.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,579.92 : 314,408.76 = 69,339.76 : x
  2. Step 2: Convert to fraction form
    209,579.92/314,408.76 = 69,339.76/x
  3. Step 3: Cross multiply
    209,579.92x = 314,408.76 × 69,339.76
  4. Step 4: Simplify right side
    209,579.92x = 21,801,027,960.30
  5. Step 5: Solve for x
    x = 21,801,027,960.30/209,579.92
  6. Step 6: Final answer
    x = 104,022.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.