Home / 386,872.12-533,907.22-217,106.26

Finding the Fourth Proportional to 386,872.12, 533,907.22 and 217,106.26

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Solution

The fourth proportional to 386,872.12, 533,907.22 and 217,106.26 is: 299,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,872.12 : 533,907.22 = 217,106.26 : x
  2. Step 2: Convert to fraction form
    386,872.12/533,907.22 = 217,106.26/x
  3. Step 3: Cross multiply
    386,872.12x = 533,907.22 × 217,106.26
  4. Step 4: Simplify right side
    386,872.12x = 115,914,599,721.20
  5. Step 5: Solve for x
    x = 115,914,599,721.20/386,872.12
  6. Step 6: Final answer
    x = 299,619.94

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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.