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Finding the Fourth Proportional to 479,545.95, 661,763.28 and 261,747.42

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Solution

The fourth proportional to 479,545.95, 661,763.28 and 261,747.42 is: 361,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,545.95 : 661,763.28 = 261,747.42 : x
  2. Step 2: Convert to fraction form
    479,545.95/661,763.28 = 261,747.42/x
  3. Step 3: Cross multiply
    479,545.95x = 661,763.28 × 261,747.42
  4. Step 4: Simplify right side
    479,545.95x = 173,214,831,190.74
  5. Step 5: Solve for x
    x = 173,214,831,190.74/479,545.95
  6. Step 6: Final answer
    x = 361,205.91

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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.