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Finding the Fourth Proportional to 275,492.38, 380,150.28 and 154,646.98

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Solution

The fourth proportional to 275,492.38, 380,150.28 and 154,646.98 is: 213,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,492.38 : 380,150.28 = 154,646.98 : x
  2. Step 2: Convert to fraction form
    275,492.38/380,150.28 = 154,646.98/x
  3. Step 3: Cross multiply
    275,492.38x = 380,150.28 × 154,646.98
  4. Step 4: Simplify right side
    275,492.38x = 58,789,092,748.15
  5. Step 5: Solve for x
    x = 58,789,092,748.15/275,492.38
  6. Step 6: Final answer
    x = 213,396.44

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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.