Home / 263,942.10-395,909.55-86,454.90

Finding the Fourth Proportional to 263,942.10, 395,909.55 and 86,454.90

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Solution

The fourth proportional to 263,942.10, 395,909.55 and 86,454.90 is: 129,681.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,942.10 : 395,909.55 = 86,454.90 : x
  2. Step 2: Convert to fraction form
    263,942.10/395,909.55 = 86,454.90/x
  3. Step 3: Cross multiply
    263,942.10x = 395,909.55 × 86,454.90
  4. Step 4: Simplify right side
    263,942.10x = 34,228,320,554.30
  5. Step 5: Solve for x
    x = 34,228,320,554.30/263,942.10
  6. Step 6: Final answer
    x = 129,681.17

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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.