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Finding the Fourth Proportional to 275,850.19, 380,673.60 and 154,991.39

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Solution

The fourth proportional to 275,850.19, 380,673.60 and 154,991.39 is: 213,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,850.19 : 380,673.60 = 154,991.39 : x
  2. Step 2: Convert to fraction form
    275,850.19/380,673.60 = 154,991.39/x
  3. Step 3: Cross multiply
    275,850.19x = 380,673.60 × 154,991.39
  4. Step 4: Simplify right side
    275,850.19x = 59,001,130,400.30
  5. Step 5: Solve for x
    x = 59,001,130,400.30/275,850.19
  6. Step 6: Final answer
    x = 213,888.31

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1.5x scale

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.