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Finding the Fourth Proportional to 258,884.96, 388,349.87 and 79,010.84

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Solution

The fourth proportional to 258,884.96, 388,349.87 and 79,010.84 is: 118,523.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,884.96 : 388,349.87 = 79,010.84 : x
  2. Step 2: Convert to fraction form
    258,884.96/388,349.87 = 79,010.84/x
  3. Step 3: Cross multiply
    258,884.96x = 388,349.87 × 79,010.84
  4. Step 4: Simplify right side
    258,884.96x = 30,683,850,018.41
  5. Step 5: Solve for x
    x = 30,683,850,018.41/258,884.96
  6. Step 6: Final answer
    x = 118,523.11

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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.