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Finding the Fourth Proportional to 258,808.37, 357,073.11 and 145,609.25

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Solution

The fourth proportional to 258,808.37, 357,073.11 and 145,609.25 is: 200,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,808.37 : 357,073.11 = 145,609.25 : x
  2. Step 2: Convert to fraction form
    258,808.37/357,073.11 = 145,609.25/x
  3. Step 3: Cross multiply
    258,808.37x = 357,073.11 × 145,609.25
  4. Step 4: Simplify right side
    258,808.37x = 51,993,145,956.90
  5. Step 5: Solve for x
    x = 51,993,145,956.90/258,808.37
  6. Step 6: Final answer
    x = 200,894.38

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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.