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Finding the Fourth Proportional to 323,515.64, 485,273.46 and 98,876.72

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Solution

The fourth proportional to 323,515.64, 485,273.46 and 98,876.72 is: 148,315.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,515.64 : 485,273.46 = 98,876.72 : x
  2. Step 2: Convert to fraction form
    323,515.64/485,273.46 = 98,876.72/x
  3. Step 3: Cross multiply
    323,515.64x = 485,273.46 × 98,876.72
  4. Step 4: Simplify right side
    323,515.64x = 47,982,245,601.48
  5. Step 5: Solve for x
    x = 47,982,245,601.48/323,515.64
  6. Step 6: Final answer
    x = 148,315.07

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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.