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Finding the Fourth Proportional to 220,173.30, 329,871.15 and 180,515.70

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Solution

The fourth proportional to 220,173.30, 329,871.15 and 180,515.70 is: 270,454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,173.30 : 329,871.15 = 180,515.70 : x
  2. Step 2: Convert to fraction form
    220,173.30/329,871.15 = 180,515.70/x
  3. Step 3: Cross multiply
    220,173.30x = 329,871.15 × 180,515.70
  4. Step 4: Simplify right side
    220,173.30x = 59,546,921,552.06
  5. Step 5: Solve for x
    x = 59,546,921,552.06/220,173.30
  6. Step 6: Final answer
    x = 270,454.78

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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.