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Finding the Fourth Proportional to 275,770.54, 380,521.90 and 154,888.68

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Solution

The fourth proportional to 275,770.54, 380,521.90 and 154,888.68 is: 213,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,770.54 : 380,521.90 = 154,888.68 : x
  2. Step 2: Convert to fraction form
    275,770.54/380,521.90 = 154,888.68/x
  3. Step 3: Cross multiply
    275,770.54x = 380,521.90 × 154,888.68
  4. Step 4: Simplify right side
    275,770.54x = 58,938,534,802.09
  5. Step 5: Solve for x
    x = 58,938,534,802.09/275,770.54
  6. Step 6: Final answer
    x = 213,723.10

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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.