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Finding the Fourth Proportional to 320,952.80, 481,040.40 and 143,271.20

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Solution

The fourth proportional to 320,952.80, 481,040.40 and 143,271.20 is: 214,733.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,952.80 : 481,040.40 = 143,271.20 : x
  2. Step 2: Convert to fraction form
    320,952.80/481,040.40 = 143,271.20/x
  3. Step 3: Cross multiply
    320,952.80x = 481,040.40 × 143,271.20
  4. Step 4: Simplify right side
    320,952.80x = 68,919,235,356.48
  5. Step 5: Solve for x
    x = 68,919,235,356.48/320,952.80
  6. Step 6: Final answer
    x = 214,733.24

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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.