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Finding the Fourth Proportional to 323,072.51, 484,608.63 and 86,409.04

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Solution

The fourth proportional to 323,072.51, 484,608.63 and 86,409.04 is: 129,613.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,072.51 : 484,608.63 = 86,409.04 : x
  2. Step 2: Convert to fraction form
    323,072.51/484,608.63 = 86,409.04/x
  3. Step 3: Cross multiply
    323,072.51x = 484,608.63 × 86,409.04
  4. Step 4: Simplify right side
    323,072.51x = 41,874,566,494.02
  5. Step 5: Solve for x
    x = 41,874,566,494.02/323,072.51
  6. Step 6: Final answer
    x = 129,613.52

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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.