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Finding the Fourth Proportional to 275,830.84, 380,684.94 and 154,981.48

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Solution

The fourth proportional to 275,830.84, 380,684.94 and 154,981.48 is: 213,896.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,830.84 : 380,684.94 = 154,981.48 : x
  2. Step 2: Convert to fraction form
    275,830.84/380,684.94 = 154,981.48/x
  3. Step 3: Cross multiply
    275,830.84x = 380,684.94 × 154,981.48
  4. Step 4: Simplify right side
    275,830.84x = 58,999,115,414.91
  5. Step 5: Solve for x
    x = 58,999,115,414.91/275,830.84
  6. Step 6: Final answer
    x = 213,896.01

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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.