Home / 384,907.32-531,174.06-215,137.80

Finding the Fourth Proportional to 384,907.32, 531,174.06 and 215,137.80

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Solution

The fourth proportional to 384,907.32, 531,174.06 and 215,137.80 is: 296,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,907.32 : 531,174.06 = 215,137.80 : x
  2. Step 2: Convert to fraction form
    384,907.32/531,174.06 = 215,137.80/x
  3. Step 3: Cross multiply
    384,907.32x = 531,174.06 × 215,137.80
  4. Step 4: Simplify right side
    384,907.32x = 114,275,618,685.47
  5. Step 5: Solve for x
    x = 114,275,618,685.47/384,907.32
  6. Step 6: Final answer
    x = 296,891.26

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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.