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Finding the Fourth Proportional to 353,900.20, 531,887.10 and 347,679.40

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Solution

The fourth proportional to 353,900.20, 531,887.10 and 347,679.40 is: 522,537.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,900.20 : 531,887.10 = 347,679.40 : x
  2. Step 2: Convert to fraction form
    353,900.20/531,887.10 = 347,679.40/x
  3. Step 3: Cross multiply
    353,900.20x = 531,887.10 × 347,679.40
  4. Step 4: Simplify right side
    353,900.20x = 184,926,187,795.74
  5. Step 5: Solve for x
    x = 184,926,187,795.74/353,900.20
  6. Step 6: Final answer
    x = 522,537.68

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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.