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Finding the Fourth Proportional to 275,482.88, 380,137.17 and 154,637.46

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Solution

The fourth proportional to 275,482.88, 380,137.17 and 154,637.46 is: 213,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,482.88 : 380,137.17 = 154,637.46 : x
  2. Step 2: Convert to fraction form
    275,482.88/380,137.17 = 154,637.46/x
  3. Step 3: Cross multiply
    275,482.88x = 380,137.17 × 154,637.46
  4. Step 4: Simplify right side
    275,482.88x = 58,783,446,420.39
  5. Step 5: Solve for x
    x = 58,783,446,420.39/275,482.88
  6. Step 6: Final answer
    x = 213,383.30

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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.