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Finding the Fourth Proportional to 377,902.80, 521,481.93 and 208,136.92

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Solution

The fourth proportional to 377,902.80, 521,481.93 and 208,136.92 is: 287,215.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,902.80 : 521,481.93 = 208,136.92 : x
  2. Step 2: Convert to fraction form
    377,902.80/521,481.93 = 208,136.92/x
  3. Step 3: Cross multiply
    377,902.80x = 521,481.93 × 208,136.92
  4. Step 4: Simplify right side
    377,902.80x = 108,539,642,745.86
  5. Step 5: Solve for x
    x = 108,539,642,745.86/377,902.80
  6. Step 6: Final answer
    x = 287,215.77

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1.5x scale

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.