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Finding the Fourth Proportional to 375,870.82, 518,705.28 and 203,788.34

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Solution

The fourth proportional to 375,870.82, 518,705.28 and 203,788.34 is: 281,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,870.82 : 518,705.28 = 203,788.34 : x
  2. Step 2: Convert to fraction form
    375,870.82/518,705.28 = 203,788.34/x
  3. Step 3: Cross multiply
    375,870.82x = 518,705.28 × 203,788.34
  4. Step 4: Simplify right side
    375,870.82x = 105,706,087,960.44
  5. Step 5: Solve for x
    x = 105,706,087,960.44/375,870.82
  6. Step 6: Final answer
    x = 281,229.83

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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.