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Finding the Fourth Proportional to 272,528.70, 408,793.05 and 213,414.90

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Solution

The fourth proportional to 272,528.70, 408,793.05 and 213,414.90 is: 320,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,528.70 : 408,793.05 = 213,414.90 : x
  2. Step 2: Convert to fraction form
    272,528.70/408,793.05 = 213,414.90/x
  3. Step 3: Cross multiply
    272,528.70x = 408,793.05 × 213,414.90
  4. Step 4: Simplify right side
    272,528.70x = 87,242,527,886.45
  5. Step 5: Solve for x
    x = 87,242,527,886.45/272,528.70
  6. Step 6: Final answer
    x = 320,122.35

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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.