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Finding the Fourth Proportional to 275,925.54, 380,710.73 and 161,139.03

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Solution

The fourth proportional to 275,925.54, 380,710.73 and 161,139.03 is: 222,333.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,925.54 : 380,710.73 = 161,139.03 : x
  2. Step 2: Convert to fraction form
    275,925.54/380,710.73 = 161,139.03/x
  3. Step 3: Cross multiply
    275,925.54x = 380,710.73 × 161,139.03
  4. Step 4: Simplify right side
    275,925.54x = 61,347,357,742.79
  5. Step 5: Solve for x
    x = 61,347,357,742.79/275,925.54
  6. Step 6: Final answer
    x = 222,333.02

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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.