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Finding the Fourth Proportional to 353,091.72, 487,269.74 and 191,947.08

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Solution

The fourth proportional to 353,091.72, 487,269.74 and 191,947.08 is: 264,888.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,091.72 : 487,269.74 = 191,947.08 : x
  2. Step 2: Convert to fraction form
    353,091.72/487,269.74 = 191,947.08/x
  3. Step 3: Cross multiply
    353,091.72x = 487,269.74 × 191,947.08
  4. Step 4: Simplify right side
    353,091.72x = 93,530,003,765.36
  5. Step 5: Solve for x
    x = 93,530,003,765.36/353,091.72
  6. Step 6: Final answer
    x = 264,888.69

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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.