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Finding the Fourth Proportional to 220,157.60, 330,132.30 and 85,284.84

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Solution

The fourth proportional to 220,157.60, 330,132.30 and 85,284.84 is: 127,886.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,157.60 : 330,132.30 = 85,284.84 : x
  2. Step 2: Convert to fraction form
    220,157.60/330,132.30 = 85,284.84/x
  3. Step 3: Cross multiply
    220,157.60x = 330,132.30 × 85,284.84
  4. Step 4: Simplify right side
    220,157.60x = 28,155,280,384.33
  5. Step 5: Solve for x
    x = 28,155,280,384.33/220,157.60
  6. Step 6: Final answer
    x = 127,886.94

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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.