Home / 285,627-394,001.10-178,145.40

Finding the Fourth Proportional to 285,627, 394,001.10 and 178,145.40

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Solution

The fourth proportional to 285,627, 394,001.10 and 178,145.40 is: 245,738.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,627 : 394,001.10 = 178,145.40 : x
  2. Step 2: Convert to fraction form
    285,627/394,001.10 = 178,145.40/x
  3. Step 3: Cross multiply
    285,627x = 394,001.10 × 178,145.40
  4. Step 4: Simplify right side
    285,627x = 70,189,483,559.94
  5. Step 5: Solve for x
    x = 70,189,483,559.94/285,627
  6. Step 6: Final answer
    x = 245,738.27

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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.