Home / 280,434.24-386,996.32-153,109.44

Finding the Fourth Proportional to 280,434.24, 386,996.32 and 153,109.44

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Solution

The fourth proportional to 280,434.24, 386,996.32 and 153,109.44 is: 211,289.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,434.24 : 386,996.32 = 153,109.44 : x
  2. Step 2: Convert to fraction form
    280,434.24/386,996.32 = 153,109.44/x
  3. Step 3: Cross multiply
    280,434.24x = 386,996.32 × 153,109.44
  4. Step 4: Simplify right side
    280,434.24x = 59,252,789,837.26
  5. Step 5: Solve for x
    x = 59,252,789,837.26/280,434.24
  6. Step 6: Final answer
    x = 211,289.43

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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.