Home / 281,947.68-389,031.30-161,128.62

Finding the Fourth Proportional to 281,947.68, 389,031.30 and 161,128.62

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Solution

The fourth proportional to 281,947.68, 389,031.30 and 161,128.62 is: 222,325.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,947.68 : 389,031.30 = 161,128.62 : x
  2. Step 2: Convert to fraction form
    281,947.68/389,031.30 = 161,128.62/x
  3. Step 3: Cross multiply
    281,947.68x = 389,031.30 × 161,128.62
  4. Step 4: Simplify right side
    281,947.68x = 62,684,076,505.81
  5. Step 5: Solve for x
    x = 62,684,076,505.81/281,947.68
  6. Step 6: Final answer
    x = 222,325.21

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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.