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Finding the Fourth Proportional to 275,390.91, 380,077.26 and 154,539.32

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Solution

The fourth proportional to 275,390.91, 380,077.26 and 154,539.32 is: 213,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,390.91 : 380,077.26 = 154,539.32 : x
  2. Step 2: Convert to fraction form
    275,390.91/380,077.26 = 154,539.32/x
  3. Step 3: Cross multiply
    275,390.91x = 380,077.26 × 154,539.32
  4. Step 4: Simplify right side
    275,390.91x = 58,736,879,407.48
  5. Step 5: Solve for x
    x = 58,736,879,407.48/275,390.91
  6. Step 6: Final answer
    x = 213,285.47

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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.