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Finding the Fourth Proportional to 302,478.28, 453,682.86 and 80,879.56

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Solution

The fourth proportional to 302,478.28, 453,682.86 and 80,879.56 is: 121,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,478.28 : 453,682.86 = 80,879.56 : x
  2. Step 2: Convert to fraction form
    302,478.28/453,682.86 = 80,879.56/x
  3. Step 3: Cross multiply
    302,478.28x = 453,682.86 × 80,879.56
  4. Step 4: Simplify right side
    302,478.28x = 36,693,670,096.34
  5. Step 5: Solve for x
    x = 36,693,670,096.34/302,478.28
  6. Step 6: Final answer
    x = 121,310.10

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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.