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Finding the Fourth Proportional to 489,933.36, 676,055.70 and 275,097

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Solution

The fourth proportional to 489,933.36, 676,055.70 and 275,097 is: 379,604.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,933.36 : 676,055.70 = 275,097 : x
  2. Step 2: Convert to fraction form
    489,933.36/676,055.70 = 275,097/x
  3. Step 3: Cross multiply
    489,933.36x = 676,055.70 × 275,097
  4. Step 4: Simplify right side
    489,933.36x = 185,980,894,902.90
  5. Step 5: Solve for x
    x = 185,980,894,902.90/489,933.36
  6. Step 6: Final answer
    x = 379,604.47

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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.