Home / 281,536.20-388,520.10-154,213.92

Finding the Fourth Proportional to 281,536.20, 388,520.10 and 154,213.92

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Solution

The fourth proportional to 281,536.20, 388,520.10 and 154,213.92 is: 212,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,536.20 : 388,520.10 = 154,213.92 : x
  2. Step 2: Convert to fraction form
    281,536.20/388,520.10 = 154,213.92/x
  3. Step 3: Cross multiply
    281,536.20x = 388,520.10 × 154,213.92
  4. Step 4: Simplify right side
    281,536.20x = 59,915,207,619.79
  5. Step 5: Solve for x
    x = 59,915,207,619.79/281,536.20
  6. Step 6: Final answer
    x = 212,815.29

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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.