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Finding the Fourth Proportional to 258,519.33, 356,748.15 and 143,794.74

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Solution

The fourth proportional to 258,519.33, 356,748.15 and 143,794.74 is: 198,432.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,519.33 : 356,748.15 = 143,794.74 : x
  2. Step 2: Convert to fraction form
    258,519.33/356,748.15 = 143,794.74/x
  3. Step 3: Cross multiply
    258,519.33x = 356,748.15 × 143,794.74
  4. Step 4: Simplify right side
    258,519.33x = 51,298,507,474.73
  5. Step 5: Solve for x
    x = 51,298,507,474.73/258,519.33
  6. Step 6: Final answer
    x = 198,432.00

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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.