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Finding the Fourth Proportional to 348,059.80, 522,138.30 and 148,378.60

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Solution

The fourth proportional to 348,059.80, 522,138.30 and 148,378.60 is: 222,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,059.80 : 522,138.30 = 148,378.60 : x
  2. Step 2: Convert to fraction form
    348,059.80/522,138.30 = 148,378.60/x
  3. Step 3: Cross multiply
    348,059.80x = 522,138.30 × 148,378.60
  4. Step 4: Simplify right side
    348,059.80x = 77,474,149,960.38
  5. Step 5: Solve for x
    x = 77,474,149,960.38/348,059.80
  6. Step 6: Final answer
    x = 222,588.62

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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.