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Finding the Fourth Proportional to 256,933.80, 385,343.10 and 168,805.80

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Solution

The fourth proportional to 256,933.80, 385,343.10 and 168,805.80 is: 253,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,933.80 : 385,343.10 = 168,805.80 : x
  2. Step 2: Convert to fraction form
    256,933.80/385,343.10 = 168,805.80/x
  3. Step 3: Cross multiply
    256,933.80x = 385,343.10 × 168,805.80
  4. Step 4: Simplify right side
    256,933.80x = 65,048,150,269.98
  5. Step 5: Solve for x
    x = 65,048,150,269.98/256,933.80
  6. Step 6: Final answer
    x = 253,170.86

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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.