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Finding the Fourth Proportional to 268,126.80, 402,244.20 and 78,586.80

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Solution

The fourth proportional to 268,126.80, 402,244.20 and 78,586.80 is: 117,896.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,126.80 : 402,244.20 = 78,586.80 : x
  2. Step 2: Convert to fraction form
    268,126.80/402,244.20 = 78,586.80/x
  3. Step 3: Cross multiply
    268,126.80x = 402,244.20 × 78,586.80
  4. Step 4: Simplify right side
    268,126.80x = 31,611,084,496.56
  5. Step 5: Solve for x
    x = 31,611,084,496.56/268,126.80
  6. Step 6: Final answer
    x = 117,896.03

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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.