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Finding the Fourth Proportional to 323,149.76, 484,499.79 and 143,137.47

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Solution

The fourth proportional to 323,149.76, 484,499.79 and 143,137.47 is: 214,606.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,149.76 : 484,499.79 = 143,137.47 : x
  2. Step 2: Convert to fraction form
    323,149.76/484,499.79 = 143,137.47/x
  3. Step 3: Cross multiply
    323,149.76x = 484,499.79 × 143,137.47
  4. Step 4: Simplify right side
    323,149.76x = 69,350,074,156.13
  5. Step 5: Solve for x
    x = 69,350,074,156.13/323,149.76
  6. Step 6: Final answer
    x = 214,606.61

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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.