Home / 281,966.77-389,113.36-161,145.55

Finding the Fourth Proportional to 281,966.77, 389,113.36 and 161,145.55

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Solution

The fourth proportional to 281,966.77, 389,113.36 and 161,145.55 is: 222,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,966.77 : 389,113.36 = 161,145.55 : x
  2. Step 2: Convert to fraction form
    281,966.77/389,113.36 = 161,145.55/x
  3. Step 3: Cross multiply
    281,966.77x = 389,113.36 × 161,145.55
  4. Step 4: Simplify right side
    281,966.77x = 62,703,886,409.55
  5. Step 5: Solve for x
    x = 62,703,886,409.55/281,966.77
  6. Step 6: Final answer
    x = 222,380.41

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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.