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Finding the Fourth Proportional to 313,802.70, 470,704.05 and 219,324.30

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Solution

The fourth proportional to 313,802.70, 470,704.05 and 219,324.30 is: 328,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,802.70 : 470,704.05 = 219,324.30 : x
  2. Step 2: Convert to fraction form
    313,802.70/470,704.05 = 219,324.30/x
  3. Step 3: Cross multiply
    313,802.70x = 470,704.05 × 219,324.30
  4. Step 4: Simplify right side
    313,802.70x = 103,236,836,273.42
  5. Step 5: Solve for x
    x = 103,236,836,273.42/313,802.70
  6. Step 6: Final answer
    x = 328,986.45

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Similar ratio
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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.