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Finding the Fourth Proportional to 379,211.94, 523,309.37 and 207,130.02

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Solution

The fourth proportional to 379,211.94, 523,309.37 and 207,130.02 is: 285,837.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,211.94 : 523,309.37 = 207,130.02 : x
  2. Step 2: Convert to fraction form
    379,211.94/523,309.37 = 207,130.02/x
  3. Step 3: Cross multiply
    379,211.94x = 523,309.37 × 207,130.02
  4. Step 4: Simplify right side
    379,211.94x = 108,393,078,052.97
  5. Step 5: Solve for x
    x = 108,393,078,052.97/379,211.94
  6. Step 6: Final answer
    x = 285,837.72

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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.