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Finding the Fourth Proportional to 275,872.38, 380,739.06 and 168,419.40

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Solution

The fourth proportional to 275,872.38, 380,739.06 and 168,419.40 is: 232,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,872.38 : 380,739.06 = 168,419.40 : x
  2. Step 2: Convert to fraction form
    275,872.38/380,739.06 = 168,419.40/x
  3. Step 3: Cross multiply
    275,872.38x = 380,739.06 × 168,419.40
  4. Step 4: Simplify right side
    275,872.38x = 64,123,844,041.76
  5. Step 5: Solve for x
    x = 64,123,844,041.76/275,872.38
  6. Step 6: Final answer
    x = 232,440.25

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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.