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Finding the Fourth Proportional to 275,672.96, 380,437.86 and 154,835.54

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Solution

The fourth proportional to 275,672.96, 380,437.86 and 154,835.54 is: 213,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,672.96 : 380,437.86 = 154,835.54 : x
  2. Step 2: Convert to fraction form
    275,672.96/380,437.86 = 154,835.54/x
  3. Step 3: Cross multiply
    275,672.96x = 380,437.86 × 154,835.54
  4. Step 4: Simplify right side
    275,672.96x = 58,905,301,489.54
  5. Step 5: Solve for x
    x = 58,905,301,489.54/275,672.96
  6. Step 6: Final answer
    x = 213,678.20

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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.