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Finding the Fourth Proportional to 275,847.32, 380,669.64 and 154,988.48

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Solution

The fourth proportional to 275,847.32, 380,669.64 and 154,988.48 is: 213,884.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,847.32 : 380,669.64 = 154,988.48 : x
  2. Step 2: Convert to fraction form
    275,847.32/380,669.64 = 154,988.48/x
  3. Step 3: Cross multiply
    275,847.32x = 380,669.64 × 154,988.48
  4. Step 4: Simplify right side
    275,847.32x = 58,999,408,885.75
  5. Step 5: Solve for x
    x = 58,999,408,885.75/275,847.32
  6. Step 6: Final answer
    x = 213,884.29

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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.