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Finding the Fourth Proportional to 347,274.80, 520,912.20 and 189,810.80

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Solution

The fourth proportional to 347,274.80, 520,912.20 and 189,810.80 is: 284,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,274.80 : 520,912.20 = 189,810.80 : x
  2. Step 2: Convert to fraction form
    347,274.80/520,912.20 = 189,810.80/x
  3. Step 3: Cross multiply
    347,274.80x = 520,912.20 × 189,810.80
  4. Step 4: Simplify right side
    347,274.80x = 98,874,761,411.76
  5. Step 5: Solve for x
    x = 98,874,761,411.76/347,274.80
  6. Step 6: Final answer
    x = 284,716.20

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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.