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Finding the Fourth Proportional to 349,379.88, 523,940.90 and 124,680.21

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Solution

The fourth proportional to 349,379.88, 523,940.90 and 124,680.21 is: 186,974.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,379.88 : 523,940.90 = 124,680.21 : x
  2. Step 2: Convert to fraction form
    349,379.88/523,940.90 = 124,680.21/x
  3. Step 3: Cross multiply
    349,379.88x = 523,940.90 × 124,680.21
  4. Step 4: Simplify right side
    349,379.88x = 65,325,060,816.19
  5. Step 5: Solve for x
    x = 65,325,060,816.19/349,379.88
  6. Step 6: Final answer
    x = 186,974.31

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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.