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Finding the Fourth Proportional to 258,082.92, 356,142.36 and 143,369

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Solution

The fourth proportional to 258,082.92, 356,142.36 and 143,369 is: 197,842.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,082.92 : 356,142.36 = 143,369 : x
  2. Step 2: Convert to fraction form
    258,082.92/356,142.36 = 143,369/x
  3. Step 3: Cross multiply
    258,082.92x = 356,142.36 × 143,369
  4. Step 4: Simplify right side
    258,082.92x = 51,059,774,010.84
  5. Step 5: Solve for x
    x = 51,059,774,010.84/258,082.92
  6. Step 6: Final answer
    x = 197,842.52

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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.