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Finding the Fourth Proportional to 353,362.75, 487,672.22 and 208,169.87

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Solution

The fourth proportional to 353,362.75, 487,672.22 and 208,169.87 is: 287,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,362.75 : 487,672.22 = 208,169.87 : x
  2. Step 2: Convert to fraction form
    353,362.75/487,672.22 = 208,169.87/x
  3. Step 3: Cross multiply
    353,362.75x = 487,672.22 × 208,169.87
  4. Step 4: Simplify right side
    353,362.75x = 101,518,660,722.08
  5. Step 5: Solve for x
    x = 101,518,660,722.08/353,362.75
  6. Step 6: Final answer
    x = 287,293.05

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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.