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Finding the Fourth Proportional to 805,221, 1,207,838.79 and 244,255.50

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Solution

The fourth proportional to 805,221, 1,207,838.79 and 244,255.50 is: 366,385.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,221 : 1,207,838.79 = 244,255.50 : x
  2. Step 2: Convert to fraction form
    805,221/1,207,838.79 = 244,255.50/x
  3. Step 3: Cross multiply
    805,221x = 1,207,838.79 × 244,255.50
  4. Step 4: Simplify right side
    805,221x = 295,021,267,570.85
  5. Step 5: Solve for x
    x = 295,021,267,570.85/805,221
  6. Step 6: Final answer
    x = 366,385.46

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Why These Related Problems?

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