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Finding the Fourth Proportional to 323,778.24, 485,369.28 and 218,633.76

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Solution

The fourth proportional to 323,778.24, 485,369.28 and 218,633.76 is: 327,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,778.24 : 485,369.28 = 218,633.76 : x
  2. Step 2: Convert to fraction form
    323,778.24/485,369.28 = 218,633.76/x
  3. Step 3: Cross multiply
    323,778.24x = 485,369.28 × 218,633.76
  4. Step 4: Simplify right side
    323,778.24x = 106,118,110,674.89
  5. Step 5: Solve for x
    x = 106,118,110,674.89/323,778.24
  6. Step 6: Final answer
    x = 327,749.36

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1.5x scale

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.