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Finding the Fourth Proportional to 307,989.20, 461,206.20 and 245,781.20

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Solution

The fourth proportional to 307,989.20, 461,206.20 and 245,781.20 is: 368,051.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,989.20 : 461,206.20 = 245,781.20 : x
  2. Step 2: Convert to fraction form
    307,989.20/461,206.20 = 245,781.20/x
  3. Step 3: Cross multiply
    307,989.20x = 461,206.20 × 245,781.20
  4. Step 4: Simplify right side
    307,989.20x = 113,355,813,283.44
  5. Step 5: Solve for x
    x = 113,355,813,283.44/307,989.20
  6. Step 6: Final answer
    x = 368,051.26

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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.