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Finding the Fourth Proportional to 180,478.56, 270,717.72 and 55,819.56

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Solution

The fourth proportional to 180,478.56, 270,717.72 and 55,819.56 is: 83,729.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,478.56 : 270,717.72 = 55,819.56 : x
  2. Step 2: Convert to fraction form
    180,478.56/270,717.72 = 55,819.56/x
  3. Step 3: Cross multiply
    180,478.56x = 270,717.72 × 55,819.56
  4. Step 4: Simplify right side
    180,478.56x = 15,111,344,014.60
  5. Step 5: Solve for x
    x = 15,111,344,014.60/180,478.56
  6. Step 6: Final answer
    x = 83,729.30

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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.