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Finding the Fourth Proportional to 258,225.89, 387,361.16 and 71,237.39

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Solution

The fourth proportional to 258,225.89, 387,361.16 and 71,237.39 is: 106,862.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,225.89 : 387,361.16 = 71,237.39 : x
  2. Step 2: Convert to fraction form
    258,225.89/387,361.16 = 71,237.39/x
  3. Step 3: Cross multiply
    258,225.89x = 387,361.16 × 71,237.39
  4. Step 4: Simplify right side
    258,225.89x = 27,594,598,379.18
  5. Step 5: Solve for x
    x = 27,594,598,379.18/258,225.89
  6. Step 6: Final answer
    x = 106,862.24

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