Home / 378,206.02-521,915.31-206,129.41

Finding the Fourth Proportional to 378,206.02, 521,915.31 and 206,129.41

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Solution

The fourth proportional to 378,206.02, 521,915.31 and 206,129.41 is: 284,453.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,206.02 : 521,915.31 = 206,129.41 : x
  2. Step 2: Convert to fraction form
    378,206.02/521,915.31 = 206,129.41/x
  3. Step 3: Cross multiply
    378,206.02x = 521,915.31 × 206,129.41
  4. Step 4: Simplify right side
    378,206.02x = 107,582,094,920.27
  5. Step 5: Solve for x
    x = 107,582,094,920.27/378,206.02
  6. Step 6: Final answer
    x = 284,453.68

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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.