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Finding the Fourth Proportional to 353,541.20, 530,344.20 and 143,135.60

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Solution

The fourth proportional to 353,541.20, 530,344.20 and 143,135.60 is: 214,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,541.20 : 530,344.20 = 143,135.60 : x
  2. Step 2: Convert to fraction form
    353,541.20/530,344.20 = 143,135.60/x
  3. Step 3: Cross multiply
    353,541.20x = 530,344.20 × 143,135.60
  4. Step 4: Simplify right side
    353,541.20x = 75,911,135,273.52
  5. Step 5: Solve for x
    x = 75,911,135,273.52/353,541.20
  6. Step 6: Final answer
    x = 214,716.52

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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.