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Finding the Fourth Proportional to 220,432.80, 331,340.40 and 216,285.60

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Solution

The fourth proportional to 220,432.80, 331,340.40 and 216,285.60 is: 325,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,432.80 : 331,340.40 = 216,285.60 : x
  2. Step 2: Convert to fraction form
    220,432.80/331,340.40 = 216,285.60/x
  3. Step 3: Cross multiply
    220,432.80x = 331,340.40 × 216,285.60
  4. Step 4: Simplify right side
    220,432.80x = 71,664,157,218.24
  5. Step 5: Solve for x
    x = 71,664,157,218.24/220,432.80
  6. Step 6: Final answer
    x = 325,106.60

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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.