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Finding the Fourth Proportional to 256,949.67, 385,291.68 and 112,796.49

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Solution

The fourth proportional to 256,949.67, 385,291.68 and 112,796.49 is: 169,136.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,949.67 : 385,291.68 = 112,796.49 : x
  2. Step 2: Convert to fraction form
    256,949.67/385,291.68 = 112,796.49/x
  3. Step 3: Cross multiply
    256,949.67x = 385,291.68 × 112,796.49
  4. Step 4: Simplify right side
    256,949.67x = 43,459,549,130.20
  5. Step 5: Solve for x
    x = 43,459,549,130.20/256,949.67
  6. Step 6: Final answer
    x = 169,136.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.