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Finding the Fourth Proportional to 302,478.41, 453,683.05 and 80,879.69

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Solution

The fourth proportional to 302,478.41, 453,683.05 and 80,879.69 is: 121,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,478.41 : 453,683.05 = 80,879.69 : x
  2. Step 2: Convert to fraction form
    302,478.41/453,683.05 = 80,879.69/x
  3. Step 3: Cross multiply
    302,478.41x = 453,683.05 × 80,879.69
  4. Step 4: Simplify right side
    302,478.41x = 36,693,741,971.64
  5. Step 5: Solve for x
    x = 36,693,741,971.64/302,478.41
  6. Step 6: Final answer
    x = 121,310.29

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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.