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Finding the Fourth Proportional to 323,072.64, 484,608.81 and 86,409.17

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Solution

The fourth proportional to 323,072.64, 484,608.81 and 86,409.17 is: 129,613.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,072.64 : 484,608.81 = 86,409.17 : x
  2. Step 2: Convert to fraction form
    323,072.64/484,608.81 = 86,409.17/x
  3. Step 3: Cross multiply
    323,072.64x = 484,608.81 × 86,409.17
  4. Step 4: Simplify right side
    323,072.64x = 41,874,642,623.74
  5. Step 5: Solve for x
    x = 41,874,642,623.74/323,072.64
  6. Step 6: Final answer
    x = 129,613.71

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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.