Home / 438,778.98-658,193.09-123,211.28

Finding the Fourth Proportional to 438,778.98, 658,193.09 and 123,211.28

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Solution

The fourth proportional to 438,778.98, 658,193.09 and 123,211.28 is: 184,823.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,778.98 : 658,193.09 = 123,211.28 : x
  2. Step 2: Convert to fraction form
    438,778.98/658,193.09 = 123,211.28/x
  3. Step 3: Cross multiply
    438,778.98x = 658,193.09 × 123,211.28
  4. Step 4: Simplify right side
    438,778.98x = 81,096,813,106.06
  5. Step 5: Solve for x
    x = 81,096,813,106.06/438,778.98
  6. Step 6: Final answer
    x = 184,823.83

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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.