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Finding the Fourth Proportional to 258,489.83, 356,709.73 and 143,768.14

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Solution

The fourth proportional to 258,489.83, 356,709.73 and 143,768.14 is: 198,396.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,489.83 : 356,709.73 = 143,768.14 : x
  2. Step 2: Convert to fraction form
    258,489.83/356,709.73 = 143,768.14/x
  3. Step 3: Cross multiply
    258,489.83x = 356,709.73 × 143,768.14
  4. Step 4: Simplify right side
    258,489.83x = 51,283,492,618.45
  5. Step 5: Solve for x
    x = 51,283,492,618.45/258,489.83
  6. Step 6: Final answer
    x = 198,396.56

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1.5x scale

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.