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Finding the Fourth Proportional to 455,145.62, 628,136.57 and 251,237.03

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Solution

The fourth proportional to 455,145.62, 628,136.57 and 251,237.03 is: 346,726.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,145.62 : 628,136.57 = 251,237.03 : x
  2. Step 2: Convert to fraction form
    455,145.62/628,136.57 = 251,237.03/x
  3. Step 3: Cross multiply
    455,145.62x = 628,136.57 × 251,237.03
  4. Step 4: Simplify right side
    455,145.62x = 157,811,163,768.60
  5. Step 5: Solve for x
    x = 157,811,163,768.60/455,145.62
  6. Step 6: Final answer
    x = 346,726.76

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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.