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Finding the Fourth Proportional to 355,687.70, 490,914.69 and 228,522.26

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Solution

The fourth proportional to 355,687.70, 490,914.69 and 228,522.26 is: 315,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,687.70 : 490,914.69 = 228,522.26 : x
  2. Step 2: Convert to fraction form
    355,687.70/490,914.69 = 228,522.26/x
  3. Step 3: Cross multiply
    355,687.70x = 490,914.69 × 228,522.26
  4. Step 4: Simplify right side
    355,687.70x = 112,184,934,426.00
  5. Step 5: Solve for x
    x = 112,184,934,426.00/355,687.70
  6. Step 6: Final answer
    x = 315,402.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.