Home / 281,939.21-389,040.25-161,088.32

Finding the Fourth Proportional to 281,939.21, 389,040.25 and 161,088.32

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Solution

The fourth proportional to 281,939.21, 389,040.25 and 161,088.32 is: 222,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,939.21 : 389,040.25 = 161,088.32 : x
  2. Step 2: Convert to fraction form
    281,939.21/389,040.25 = 161,088.32/x
  3. Step 3: Cross multiply
    281,939.21x = 389,040.25 × 161,088.32
  4. Step 4: Simplify right side
    281,939.21x = 62,669,837,936.96
  5. Step 5: Solve for x
    x = 62,669,837,936.96/281,939.21
  6. Step 6: Final answer
    x = 222,281.39

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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.