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Finding the Fourth Proportional to 256,305.03, 384,457.73 and 66,764.93

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Solution

The fourth proportional to 256,305.03, 384,457.73 and 66,764.93 is: 100,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,305.03 : 384,457.73 = 66,764.93 : x
  2. Step 2: Convert to fraction form
    256,305.03/384,457.73 = 66,764.93/x
  3. Step 3: Cross multiply
    256,305.03x = 384,457.73 × 66,764.93
  4. Step 4: Simplify right side
    256,305.03x = 25,668,291,175.30
  5. Step 5: Solve for x
    x = 25,668,291,175.30/256,305.03
  6. Step 6: Final answer
    x = 100,147.44

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1.5x scale

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.