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Finding the Fourth Proportional to 347,015.80, 520,566.54 and 169,388.57

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Solution

The fourth proportional to 347,015.80, 520,566.54 and 169,388.57 is: 254,103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,015.80 : 520,566.54 = 169,388.57 : x
  2. Step 2: Convert to fraction form
    347,015.80/520,566.54 = 169,388.57/x
  3. Step 3: Cross multiply
    347,015.80x = 520,566.54 × 169,388.57
  4. Step 4: Simplify right side
    347,015.80x = 88,178,021,800.45
  5. Step 5: Solve for x
    x = 88,178,021,800.45/347,015.80
  6. Step 6: Final answer
    x = 254,103.77

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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.