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Finding the Fourth Proportional to 501,618.88, 692,234.40 and 275,276.80

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Solution

The fourth proportional to 501,618.88, 692,234.40 and 275,276.80 is: 379,882.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,618.88 : 692,234.40 = 275,276.80 : x
  2. Step 2: Convert to fraction form
    501,618.88/692,234.40 = 275,276.80/x
  3. Step 3: Cross multiply
    501,618.88x = 692,234.40 × 275,276.80
  4. Step 4: Simplify right side
    501,618.88x = 190,556,070,481.92
  5. Step 5: Solve for x
    x = 190,556,070,481.92/501,618.88
  6. Step 6: Final answer
    x = 379,882.17

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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.