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Finding the Fourth Proportional to 347,503, 520,405.66 and 214,199.89

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Solution

The fourth proportional to 347,503, 520,405.66 and 214,199.89 is: 320,776.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,503 : 520,405.66 = 214,199.89 : x
  2. Step 2: Convert to fraction form
    347,503/520,405.66 = 214,199.89/x
  3. Step 3: Cross multiply
    347,503x = 520,405.66 × 214,199.89
  4. Step 4: Simplify right side
    347,503x = 111,470,835,127.38
  5. Step 5: Solve for x
    x = 111,470,835,127.38/347,503
  6. Step 6: Final answer
    x = 320,776.61

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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.