Home / 438,965.12-658,379.00-139,406.27

Finding the Fourth Proportional to 438,965.12, 658,379.00 and 139,406.27

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Solution

The fourth proportional to 438,965.12, 658,379.00 and 139,406.27 is: 209,087.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,965.12 : 658,379.00 = 139,406.27 : x
  2. Step 2: Convert to fraction form
    438,965.12/658,379.00 = 139,406.27/x
  3. Step 3: Cross multiply
    438,965.12x = 658,379.00 × 139,406.27
  4. Step 4: Simplify right side
    438,965.12x = 91,782,157,692.95
  5. Step 5: Solve for x
    x = 91,782,157,692.95/438,965.12
  6. Step 6: Final answer
    x = 209,087.59

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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.