Home / 308,986.83-426,181.55-283,575.11

Finding the Fourth Proportional to 308,986.83, 426,181.55 and 283,575.11

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Solution

The fourth proportional to 308,986.83, 426,181.55 and 283,575.11 is: 391,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,986.83 : 426,181.55 = 283,575.11 : x
  2. Step 2: Convert to fraction form
    308,986.83/426,181.55 = 283,575.11/x
  3. Step 3: Cross multiply
    308,986.83x = 426,181.55 × 283,575.11
  4. Step 4: Simplify right side
    308,986.83x = 120,854,476,372.44
  5. Step 5: Solve for x
    x = 120,854,476,372.44/308,986.83
  6. Step 6: Final answer
    x = 391,131.48

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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.