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Finding the Fourth Proportional to 313,803.80, 470,414.10 and 219,033.80

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Solution

The fourth proportional to 313,803.80, 470,414.10 and 219,033.80 is: 328,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,803.80 : 470,414.10 = 219,033.80 : x
  2. Step 2: Convert to fraction form
    313,803.80/470,414.10 = 219,033.80/x
  3. Step 3: Cross multiply
    313,803.80x = 470,414.10 × 219,033.80
  4. Step 4: Simplify right side
    313,803.80x = 103,036,587,896.58
  5. Step 5: Solve for x
    x = 103,036,587,896.58/313,803.80
  6. Step 6: Final answer
    x = 328,347.16

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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.