Home / 285,450.29-393,918.07-154,625.48

Finding the Fourth Proportional to 285,450.29, 393,918.07 and 154,625.48

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Solution

The fourth proportional to 285,450.29, 393,918.07 and 154,625.48 is: 213,381.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,450.29 : 393,918.07 = 154,625.48 : x
  2. Step 2: Convert to fraction form
    285,450.29/393,918.07 = 154,625.48/x
  3. Step 3: Cross multiply
    285,450.29x = 393,918.07 × 154,625.48
  4. Step 4: Simplify right side
    285,450.29x = 60,909,770,654.42
  5. Step 5: Solve for x
    x = 60,909,770,654.42/285,450.29
  6. Step 6: Final answer
    x = 213,381.36

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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.