Home / 285,078.69-393,381.89-170,334.49

Finding the Fourth Proportional to 285,078.69, 393,381.89 and 170,334.49

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Solution

The fourth proportional to 285,078.69, 393,381.89 and 170,334.49 is: 235,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,078.69 : 393,381.89 = 170,334.49 : x
  2. Step 2: Convert to fraction form
    285,078.69/393,381.89 = 170,334.49/x
  3. Step 3: Cross multiply
    285,078.69x = 393,381.89 × 170,334.49
  4. Step 4: Simplify right side
    285,078.69x = 67,006,503,608.39
  5. Step 5: Solve for x
    x = 67,006,503,608.39/285,078.69
  6. Step 6: Final answer
    x = 235,045.64

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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.