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Finding the Fourth Proportional to 379,040.66, 523,075.98 and 217,927.22

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Solution

The fourth proportional to 379,040.66, 523,075.98 and 217,927.22 is: 300,739.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,040.66 : 523,075.98 = 217,927.22 : x
  2. Step 2: Convert to fraction form
    379,040.66/523,075.98 = 217,927.22/x
  3. Step 3: Cross multiply
    379,040.66x = 523,075.98 × 217,927.22
  4. Step 4: Simplify right side
    379,040.66x = 113,992,494,170.18
  5. Step 5: Solve for x
    x = 113,992,494,170.18/379,040.66
  6. Step 6: Final answer
    x = 300,739.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.