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Finding the Fourth Proportional to 256,546.45, 384,861.80 and 79,053.49

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Solution

The fourth proportional to 256,546.45, 384,861.80 and 79,053.49 is: 118,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,546.45 : 384,861.80 = 79,053.49 : x
  2. Step 2: Convert to fraction form
    256,546.45/384,861.80 = 79,053.49/x
  3. Step 3: Cross multiply
    256,546.45x = 384,861.80 × 79,053.49
  4. Step 4: Simplify right side
    256,546.45x = 30,424,668,457.68
  5. Step 5: Solve for x
    x = 30,424,668,457.68/256,546.45
  6. Step 6: Final answer
    x = 118,593.22

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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.