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Finding the Fourth Proportional to 275,538.53, 380,242.98 and 154,680.05

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Solution

The fourth proportional to 275,538.53, 380,242.98 and 154,680.05 is: 213,458.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,538.53 : 380,242.98 = 154,680.05 : x
  2. Step 2: Convert to fraction form
    275,538.53/380,242.98 = 154,680.05/x
  3. Step 3: Cross multiply
    275,538.53x = 380,242.98 × 154,680.05
  4. Step 4: Simplify right side
    275,538.53x = 58,816,004,109.16
  5. Step 5: Solve for x
    x = 58,816,004,109.16/275,538.53
  6. Step 6: Final answer
    x = 213,458.36

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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.