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Finding the Fourth Proportional to 551,843.58, 761,611.78 and 310,136.34

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Solution

The fourth proportional to 551,843.58, 761,611.78 and 310,136.34 is: 428,026.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,843.58 : 761,611.78 = 310,136.34 : x
  2. Step 2: Convert to fraction form
    551,843.58/761,611.78 = 310,136.34/x
  3. Step 3: Cross multiply
    551,843.58x = 761,611.78 × 310,136.34
  4. Step 4: Simplify right side
    551,843.58x = 236,203,489,950.09
  5. Step 5: Solve for x
    x = 236,203,489,950.09/551,843.58
  6. Step 6: Final answer
    x = 428,026.16

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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.