Home / 382,685.36-528,170.52-221,638.33

Finding the Fourth Proportional to 382,685.36, 528,170.52 and 221,638.33

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Solution

The fourth proportional to 382,685.36, 528,170.52 and 221,638.33 is: 305,898.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,685.36 : 528,170.52 = 221,638.33 : x
  2. Step 2: Convert to fraction form
    382,685.36/528,170.52 = 221,638.33/x
  3. Step 3: Cross multiply
    382,685.36x = 528,170.52 × 221,638.33
  4. Step 4: Simplify right side
    382,685.36x = 117,062,830,528.43
  5. Step 5: Solve for x
    x = 117,062,830,528.43/382,685.36
  6. Step 6: Final answer
    x = 305,898.38

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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.