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Finding the Fourth Proportional to 377,611.83, 521,108.55 and 205,530.84

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Solution

The fourth proportional to 377,611.83, 521,108.55 and 205,530.84 is: 283,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,611.83 : 521,108.55 = 205,530.84 : x
  2. Step 2: Convert to fraction form
    377,611.83/521,108.55 = 205,530.84/x
  3. Step 3: Cross multiply
    377,611.83x = 521,108.55 × 205,530.84
  4. Step 4: Simplify right side
    377,611.83x = 107,103,878,012.68
  5. Step 5: Solve for x
    x = 107,103,878,012.68/377,611.83
  6. Step 6: Final answer
    x = 283,634.86

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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.