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Finding the Fourth Proportional to 375,993.30, 518,867.21 and 203,915.06

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Solution

The fourth proportional to 375,993.30, 518,867.21 and 203,915.06 is: 281,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,993.30 : 518,867.21 = 203,915.06 : x
  2. Step 2: Convert to fraction form
    375,993.30/518,867.21 = 203,915.06/x
  3. Step 3: Cross multiply
    375,993.30x = 518,867.21 × 203,915.06
  4. Step 4: Simplify right side
    375,993.30x = 105,804,834,645.27
  5. Step 5: Solve for x
    x = 105,804,834,645.27/375,993.30
  6. Step 6: Final answer
    x = 281,400.85

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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.