Home / 353,161.92-530,075.82-128,739.26

Finding the Fourth Proportional to 353,161.92, 530,075.82 and 128,739.26

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Solution

The fourth proportional to 353,161.92, 530,075.82 and 128,739.26 is: 193,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,161.92 : 530,075.82 = 128,739.26 : x
  2. Step 2: Convert to fraction form
    353,161.92/530,075.82 = 128,739.26/x
  3. Step 3: Cross multiply
    353,161.92x = 530,075.82 × 128,739.26
  4. Step 4: Simplify right side
    353,161.92x = 68,241,568,810.69
  5. Step 5: Solve for x
    x = 68,241,568,810.69/353,161.92
  6. Step 6: Final answer
    x = 193,230.26

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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.