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Finding the Fourth Proportional to 617,136.72, 851,727.33 and 345,219.72

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Solution

The fourth proportional to 617,136.72, 851,727.33 and 345,219.72 is: 476,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,136.72 : 851,727.33 = 345,219.72 : x
  2. Step 2: Convert to fraction form
    617,136.72/851,727.33 = 345,219.72/x
  3. Step 3: Cross multiply
    617,136.72x = 851,727.33 × 345,219.72
  4. Step 4: Simplify right side
    617,136.72x = 294,033,070,378.95
  5. Step 5: Solve for x
    x = 294,033,070,378.95/617,136.72
  6. Step 6: Final answer
    x = 476,447.21

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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.