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Finding the Fourth Proportional to 371,576.31, 512,777.91 and 201,810.42

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Solution

The fourth proportional to 371,576.31, 512,777.91 and 201,810.42 is: 278,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,576.31 : 512,777.91 = 201,810.42 : x
  2. Step 2: Convert to fraction form
    371,576.31/512,777.91 = 201,810.42/x
  3. Step 3: Cross multiply
    371,576.31x = 512,777.91 × 201,810.42
  4. Step 4: Simplify right side
    371,576.31x = 103,483,925,383.82
  5. Step 5: Solve for x
    x = 103,483,925,383.82/371,576.31
  6. Step 6: Final answer
    x = 278,499.79

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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.