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Finding the Fourth Proportional to 270,448.60, 405,711.30 and 83,440.60

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Solution

The fourth proportional to 270,448.60, 405,711.30 and 83,440.60 is: 125,172.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,448.60 : 405,711.30 = 83,440.60 : x
  2. Step 2: Convert to fraction form
    270,448.60/405,711.30 = 83,440.60/x
  3. Step 3: Cross multiply
    270,448.60x = 405,711.30 × 83,440.60
  4. Step 4: Simplify right side
    270,448.60x = 33,852,794,298.78
  5. Step 5: Solve for x
    x = 33,852,794,298.78/270,448.60
  6. Step 6: Final answer
    x = 125,172.75

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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.