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Finding the Fourth Proportional to 345,862.94, 515,356.22 and 308,133.09

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Solution

The fourth proportional to 345,862.94, 515,356.22 and 308,133.09 is: 459,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,862.94 : 515,356.22 = 308,133.09 : x
  2. Step 2: Convert to fraction form
    345,862.94/515,356.22 = 308,133.09/x
  3. Step 3: Cross multiply
    345,862.94x = 515,356.22 × 308,133.09
  4. Step 4: Simplify right side
    345,862.94x = 158,798,305,289.65
  5. Step 5: Solve for x
    x = 158,798,305,289.65/345,862.94
  6. Step 6: Final answer
    x = 459,136.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.