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Finding the Fourth Proportional to 415,021.80, 622,532.70 and 341,210.55

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Solution

The fourth proportional to 415,021.80, 622,532.70 and 341,210.55 is: 511,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,021.80 : 622,532.70 = 341,210.55 : x
  2. Step 2: Convert to fraction form
    415,021.80/622,532.70 = 341,210.55/x
  3. Step 3: Cross multiply
    415,021.80x = 622,532.70 × 341,210.55
  4. Step 4: Simplify right side
    415,021.80x = 212,414,724,959.99
  5. Step 5: Solve for x
    x = 212,414,724,959.99/415,021.80
  6. Step 6: Final answer
    x = 511,815.83

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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.