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Finding the Fourth Proportional to 323,809.16, 446,979.74 and 243,469.98

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Solution

The fourth proportional to 323,809.16, 446,979.74 and 243,469.98 is: 336,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,809.16 : 446,979.74 = 243,469.98 : x
  2. Step 2: Convert to fraction form
    323,809.16/446,979.74 = 243,469.98/x
  3. Step 3: Cross multiply
    323,809.16x = 446,979.74 × 243,469.98
  4. Step 4: Simplify right side
    323,809.16x = 108,826,147,140.86
  5. Step 5: Solve for x
    x = 108,826,147,140.86/323,809.16
  6. Step 6: Final answer
    x = 336,081.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.