Home / 281,962.28-389,128.57-161,100.97

Finding the Fourth Proportional to 281,962.28, 389,128.57 and 161,100.97

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Solution

The fourth proportional to 281,962.28, 389,128.57 and 161,100.97 is: 222,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,962.28 : 389,128.57 = 161,100.97 : x
  2. Step 2: Convert to fraction form
    281,962.28/389,128.57 = 161,100.97/x
  3. Step 3: Cross multiply
    281,962.28x = 389,128.57 × 161,100.97
  4. Step 4: Simplify right side
    281,962.28x = 62,688,988,706.14
  5. Step 5: Solve for x
    x = 62,688,988,706.14/281,962.28
  6. Step 6: Final answer
    x = 222,331.12

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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.