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Finding the Fourth Proportional to 275,285.01, 379,926.63 and 154,403.45

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Solution

The fourth proportional to 275,285.01, 379,926.63 and 154,403.45 is: 213,095.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,285.01 : 379,926.63 = 154,403.45 : x
  2. Step 2: Convert to fraction form
    275,285.01/379,926.63 = 154,403.45/x
  3. Step 3: Cross multiply
    275,285.01x = 379,926.63 × 154,403.45
  4. Step 4: Simplify right side
    275,285.01x = 58,661,980,519.24
  5. Step 5: Solve for x
    x = 58,661,980,519.24/275,285.01
  6. Step 6: Final answer
    x = 213,095.44

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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.