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Finding the Fourth Proportional to 320,950.80, 481,037.40 and 143,269.20

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Solution

The fourth proportional to 320,950.80, 481,037.40 and 143,269.20 is: 214,730.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,950.80 : 481,037.40 = 143,269.20 : x
  2. Step 2: Convert to fraction form
    320,950.80/481,037.40 = 143,269.20/x
  3. Step 3: Cross multiply
    320,950.80x = 481,037.40 × 143,269.20
  4. Step 4: Simplify right side
    320,950.80x = 68,917,843,468.08
  5. Step 5: Solve for x
    x = 68,917,843,468.08/320,950.80
  6. Step 6: Final answer
    x = 214,730.24

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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.