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Finding the Fourth Proportional to 501,619.88, 692,235.78 and 275,277.80

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Solution

The fourth proportional to 501,619.88, 692,235.78 and 275,277.80 is: 379,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,619.88 : 692,235.78 = 275,277.80 : x
  2. Step 2: Convert to fraction form
    501,619.88/692,235.78 = 275,277.80/x
  3. Step 3: Cross multiply
    501,619.88x = 692,235.78 × 275,277.80
  4. Step 4: Simplify right side
    501,619.88x = 190,557,142,599.68
  5. Step 5: Solve for x
    x = 190,557,142,599.68/501,619.88
  6. Step 6: Final answer
    x = 379,883.55

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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.