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Finding the Fourth Proportional to 275,300.40, 379,917.15 and 154,444.28

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Solution

The fourth proportional to 275,300.40, 379,917.15 and 154,444.28 is: 213,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,300.40 : 379,917.15 = 154,444.28 : x
  2. Step 2: Convert to fraction form
    275,300.40/379,917.15 = 154,444.28/x
  3. Step 3: Cross multiply
    275,300.40x = 379,917.15 × 154,444.28
  4. Step 4: Simplify right side
    275,300.40x = 58,676,031,062.03
  5. Step 5: Solve for x
    x = 58,676,031,062.03/275,300.40
  6. Step 6: Final answer
    x = 213,134.57

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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.