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Finding the Fourth Proportional to 658,519.96, 987,101.94 and 258,998.80

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Solution

The fourth proportional to 658,519.96, 987,101.94 and 258,998.80 is: 388,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,519.96 : 987,101.94 = 258,998.80 : x
  2. Step 2: Convert to fraction form
    658,519.96/987,101.94 = 258,998.80/x
  3. Step 3: Cross multiply
    658,519.96x = 987,101.94 × 258,998.80
  4. Step 4: Simplify right side
    658,519.96x = 255,658,217,937.67
  5. Step 5: Solve for x
    x = 255,658,217,937.67/658,519.96
  6. Step 6: Final answer
    x = 388,231.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.