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Finding the Fourth Proportional to 336,920.13, 505,360.76 and 203,764.64

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Solution

The fourth proportional to 336,920.13, 505,360.76 and 203,764.64 is: 305,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,920.13 : 505,360.76 = 203,764.64 : x
  2. Step 2: Convert to fraction form
    336,920.13/505,360.76 = 203,764.64/x
  3. Step 3: Cross multiply
    336,920.13x = 505,360.76 × 203,764.64
  4. Step 4: Simplify right side
    336,920.13x = 102,974,649,785.90
  5. Step 5: Solve for x
    x = 102,974,649,785.90/336,920.13
  6. Step 6: Final answer
    x = 305,635.20

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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.