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Finding the Fourth Proportional to 220,533.60, 330,144.30 and 145,738.20

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Solution

The fourth proportional to 220,533.60, 330,144.30 and 145,738.20 is: 218,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,533.60 : 330,144.30 = 145,738.20 : x
  2. Step 2: Convert to fraction form
    220,533.60/330,144.30 = 145,738.20/x
  3. Step 3: Cross multiply
    220,533.60x = 330,144.30 × 145,738.20
  4. Step 4: Simplify right side
    220,533.60x = 48,114,636,022.26
  5. Step 5: Solve for x
    x = 48,114,636,022.26/220,533.60
  6. Step 6: Final answer
    x = 218,173.72

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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.