Home / 313,640.30-432,822.49-170,399.09

Finding the Fourth Proportional to 313,640.30, 432,822.49 and 170,399.09

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Solution

The fourth proportional to 313,640.30, 432,822.49 and 170,399.09 is: 235,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,640.30 : 432,822.49 = 170,399.09 : x
  2. Step 2: Convert to fraction form
    313,640.30/432,822.49 = 170,399.09/x
  3. Step 3: Cross multiply
    313,640.30x = 432,822.49 × 170,399.09
  4. Step 4: Simplify right side
    313,640.30x = 73,752,559,083.59
  5. Step 5: Solve for x
    x = 73,752,559,083.59/313,640.30
  6. Step 6: Final answer
    x = 235,150.13

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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.