Home / 280,369.18-386,906.82-172,896.22

Finding the Fourth Proportional to 280,369.18, 386,906.82 and 172,896.22

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Solution

The fourth proportional to 280,369.18, 386,906.82 and 172,896.22 is: 238,595.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,369.18 : 386,906.82 = 172,896.22 : x
  2. Step 2: Convert to fraction form
    280,369.18/386,906.82 = 172,896.22/x
  3. Step 3: Cross multiply
    280,369.18x = 386,906.82 × 172,896.22
  4. Step 4: Simplify right side
    280,369.18x = 66,894,726,670.22
  5. Step 5: Solve for x
    x = 66,894,726,670.22/280,369.18
  6. Step 6: Final answer
    x = 238,595.15

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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.