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Finding the Fourth Proportional to 302,478.91, 453,683.80 and 80,880.19

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Solution

The fourth proportional to 302,478.91, 453,683.80 and 80,880.19 is: 121,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,478.91 : 453,683.80 = 80,880.19 : x
  2. Step 2: Convert to fraction form
    302,478.91/453,683.80 = 80,880.19/x
  3. Step 3: Cross multiply
    302,478.91x = 453,683.80 × 80,880.19
  4. Step 4: Simplify right side
    302,478.91x = 36,694,029,271.10
  5. Step 5: Solve for x
    x = 36,694,029,271.10/302,478.91
  6. Step 6: Final answer
    x = 121,311.04

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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.