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Finding the Fourth Proportional to 371,583.88, 512,768.56 and 210,440.08

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Solution

The fourth proportional to 371,583.88, 512,768.56 and 210,440.08 is: 290,397.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,583.88 : 512,768.56 = 210,440.08 : x
  2. Step 2: Convert to fraction form
    371,583.88/512,768.56 = 210,440.08/x
  3. Step 3: Cross multiply
    371,583.88x = 512,768.56 × 210,440.08
  4. Step 4: Simplify right side
    371,583.88x = 107,907,055,735.68
  5. Step 5: Solve for x
    x = 107,907,055,735.68/371,583.88
  6. Step 6: Final answer
    x = 290,397.57

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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.