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Finding the Fourth Proportional to 275,298.81, 379,914.96 and 154,442.70

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Solution

The fourth proportional to 275,298.81, 379,914.96 and 154,442.70 is: 213,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,298.81 : 379,914.96 = 154,442.70 : x
  2. Step 2: Convert to fraction form
    275,298.81/379,914.96 = 154,442.70/x
  3. Step 3: Cross multiply
    275,298.81x = 379,914.96 × 154,442.70
  4. Step 4: Simplify right side
    275,298.81x = 58,675,090,156.29
  5. Step 5: Solve for x
    x = 58,675,090,156.29/275,298.81
  6. Step 6: Final answer
    x = 213,132.37

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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.