Home / 420,189.45-629,786.01-242,329.26

Finding the Fourth Proportional to 420,189.45, 629,786.01 and 242,329.26

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Solution

The fourth proportional to 420,189.45, 629,786.01 and 242,329.26 is: 363,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,189.45 : 629,786.01 = 242,329.26 : x
  2. Step 2: Convert to fraction form
    420,189.45/629,786.01 = 242,329.26/x
  3. Step 3: Cross multiply
    420,189.45x = 629,786.01 × 242,329.26
  4. Step 4: Simplify right side
    420,189.45x = 152,615,577,761.65
  5. Step 5: Solve for x
    x = 152,615,577,761.65/420,189.45
  6. Step 6: Final answer
    x = 363,206.59

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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.