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Finding the Fourth Proportional to 371,343.42, 512,310.42 and 210,161.52

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Solution

The fourth proportional to 371,343.42, 512,310.42 and 210,161.52 is: 289,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,343.42 : 512,310.42 = 210,161.52 : x
  2. Step 2: Convert to fraction form
    371,343.42/512,310.42 = 210,161.52/x
  3. Step 3: Cross multiply
    371,343.42x = 512,310.42 × 210,161.52
  4. Step 4: Simplify right side
    371,343.42x = 107,667,936,579.04
  5. Step 5: Solve for x
    x = 107,667,936,579.04/371,343.42
  6. Step 6: Final answer
    x = 289,941.68

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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.