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Finding the Fourth Proportional to 312,175.73, 430,802.49 and 168,935.78

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Solution

The fourth proportional to 312,175.73, 430,802.49 and 168,935.78 is: 233,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,175.73 : 430,802.49 = 168,935.78 : x
  2. Step 2: Convert to fraction form
    312,175.73/430,802.49 = 168,935.78/x
  3. Step 3: Cross multiply
    312,175.73x = 430,802.49 × 168,935.78
  4. Step 4: Simplify right side
    312,175.73x = 72,777,954,674.09
  5. Step 5: Solve for x
    x = 72,777,954,674.09/312,175.73
  6. Step 6: Final answer
    x = 233,131.37

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1.5x scale

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.