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Finding the Fourth Proportional to 347,940.80, 521,522.40 and 198,252.80

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Solution

The fourth proportional to 347,940.80, 521,522.40 and 198,252.80 is: 297,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,940.80 : 521,522.40 = 198,252.80 : x
  2. Step 2: Convert to fraction form
    347,940.80/521,522.40 = 198,252.80/x
  3. Step 3: Cross multiply
    347,940.80x = 521,522.40 × 198,252.80
  4. Step 4: Simplify right side
    347,940.80x = 103,393,276,062.72
  5. Step 5: Solve for x
    x = 103,393,276,062.72/347,940.80
  6. Step 6: Final answer
    x = 297,157.67

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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.