Home / 220,247-303,915.07-129,583.03

Finding the Fourth Proportional to 220,247, 303,915.07 and 129,583.03

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Solution

The fourth proportional to 220,247, 303,915.07 and 129,583.03 is: 178,809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,247 : 303,915.07 = 129,583.03 : x
  2. Step 2: Convert to fraction form
    220,247/303,915.07 = 129,583.03/x
  3. Step 3: Cross multiply
    220,247x = 303,915.07 × 129,583.03
  4. Step 4: Simplify right side
    220,247x = 39,382,235,633.26
  5. Step 5: Solve for x
    x = 39,382,235,633.26/220,247
  6. Step 6: Final answer
    x = 178,809.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.