Home / 286,136.23-394,909.14-171,419.78

Finding the Fourth Proportional to 286,136.23, 394,909.14 and 171,419.78

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Solution

The fourth proportional to 286,136.23, 394,909.14 and 171,419.78 is: 236,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,136.23 : 394,909.14 = 171,419.78 : x
  2. Step 2: Convert to fraction form
    286,136.23/394,909.14 = 171,419.78/x
  3. Step 3: Cross multiply
    286,136.23x = 394,909.14 × 171,419.78
  4. Step 4: Simplify right side
    286,136.23x = 67,695,237,898.79
  5. Step 5: Solve for x
    x = 67,695,237,898.79/286,136.23
  6. Step 6: Final answer
    x = 236,583.94

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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.