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Finding the Fourth Proportional to 258,882.60, 388,323.90 and 92,610.60

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Solution

The fourth proportional to 258,882.60, 388,323.90 and 92,610.60 is: 138,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,882.60 : 388,323.90 = 92,610.60 : x
  2. Step 2: Convert to fraction form
    258,882.60/388,323.90 = 92,610.60/x
  3. Step 3: Cross multiply
    258,882.60x = 388,323.90 × 92,610.60
  4. Step 4: Simplify right side
    258,882.60x = 35,962,909,373.34
  5. Step 5: Solve for x
    x = 35,962,909,373.34/258,882.60
  6. Step 6: Final answer
    x = 138,915.90

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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.