Home / 263,380.23-395,133.30-85,887.45

Finding the Fourth Proportional to 263,380.23, 395,133.30 and 85,887.45

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Solution

The fourth proportional to 263,380.23, 395,133.30 and 85,887.45 is: 128,851.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,380.23 : 395,133.30 = 85,887.45 : x
  2. Step 2: Convert to fraction form
    263,380.23/395,133.30 = 85,887.45/x
  3. Step 3: Cross multiply
    263,380.23x = 395,133.30 × 85,887.45
  4. Step 4: Simplify right side
    263,380.23x = 33,936,991,547.09
  5. Step 5: Solve for x
    x = 33,936,991,547.09/263,380.23
  6. Step 6: Final answer
    x = 128,851.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.