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Finding the Fourth Proportional to 323,876.06, 485,806.80 and 146,335.40

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Solution

The fourth proportional to 323,876.06, 485,806.80 and 146,335.40 is: 219,499.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,876.06 : 485,806.80 = 146,335.40 : x
  2. Step 2: Convert to fraction form
    323,876.06/485,806.80 = 146,335.40/x
  3. Step 3: Cross multiply
    323,876.06x = 485,806.80 × 146,335.40
  4. Step 4: Simplify right side
    323,876.06x = 71,090,732,400.72
  5. Step 5: Solve for x
    x = 71,090,732,400.72/323,876.06
  6. Step 6: Final answer
    x = 219,499.81

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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.