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Finding the Fourth Proportional to 275,475.21, 380,158.60 and 154,614.07

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Solution

The fourth proportional to 275,475.21, 380,158.60 and 154,614.07 is: 213,369.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,475.21 : 380,158.60 = 154,614.07 : x
  2. Step 2: Convert to fraction form
    275,475.21/380,158.60 = 154,614.07/x
  3. Step 3: Cross multiply
    275,475.21x = 380,158.60 × 154,614.07
  4. Step 4: Simplify right side
    275,475.21x = 58,777,868,778.04
  5. Step 5: Solve for x
    x = 58,777,868,778.04/275,475.21
  6. Step 6: Final answer
    x = 213,369.00

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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.