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Finding the Fourth Proportional to 348,321.60, 522,171.36 and 137,815.56

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Solution

The fourth proportional to 348,321.60, 522,171.36 and 137,815.56 is: 206,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,321.60 : 522,171.36 = 137,815.56 : x
  2. Step 2: Convert to fraction form
    348,321.60/522,171.36 = 137,815.56/x
  3. Step 3: Cross multiply
    348,321.60x = 522,171.36 × 137,815.56
  4. Step 4: Simplify right side
    348,321.60x = 71,963,338,394.36
  5. Step 5: Solve for x
    x = 71,963,338,394.36/348,321.60
  6. Step 6: Final answer
    x = 206,600.28

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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.