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Finding the Fourth Proportional to 323,830.75, 485,749.20 and 124,103.65

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Solution

The fourth proportional to 323,830.75, 485,749.20 and 124,103.65 is: 186,156.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,830.75 : 485,749.20 = 124,103.65 : x
  2. Step 2: Convert to fraction form
    323,830.75/485,749.20 = 124,103.65/x
  3. Step 3: Cross multiply
    323,830.75x = 485,749.20 × 124,103.65
  4. Step 4: Simplify right side
    323,830.75x = 60,283,248,704.58
  5. Step 5: Solve for x
    x = 60,283,248,704.58/323,830.75
  6. Step 6: Final answer
    x = 186,156.65

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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.