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Finding the Fourth Proportional to 220,172.80, 329,870.40 and 180,515.20

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Solution

The fourth proportional to 220,172.80, 329,870.40 and 180,515.20 is: 270,454.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,172.80 : 329,870.40 = 180,515.20 : x
  2. Step 2: Convert to fraction form
    220,172.80/329,870.40 = 180,515.20/x
  3. Step 3: Cross multiply
    220,172.80x = 329,870.40 × 180,515.20
  4. Step 4: Simplify right side
    220,172.80x = 59,546,621,230.08
  5. Step 5: Solve for x
    x = 59,546,621,230.08/220,172.80
  6. Step 6: Final answer
    x = 270,454.03

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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.