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Finding the Fourth Proportional to 258,419.60, 386,851.80 and 227,315.60

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Solution

The fourth proportional to 258,419.60, 386,851.80 and 227,315.60 is: 340,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,419.60 : 386,851.80 = 227,315.60 : x
  2. Step 2: Convert to fraction form
    258,419.60/386,851.80 = 227,315.60/x
  3. Step 3: Cross multiply
    258,419.60x = 386,851.80 × 227,315.60
  4. Step 4: Simplify right side
    258,419.60x = 87,937,449,028.08
  5. Step 5: Solve for x
    x = 87,937,449,028.08/258,419.60
  6. Step 6: Final answer
    x = 340,289.39

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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.