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Finding the Fourth Proportional to 481,235.40, 721,950.30 and 165,724.20

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Solution

The fourth proportional to 481,235.40, 721,950.30 and 165,724.20 is: 248,619.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,235.40 : 721,950.30 = 165,724.20 : x
  2. Step 2: Convert to fraction form
    481,235.40/721,950.30 = 165,724.20/x
  3. Step 3: Cross multiply
    481,235.40x = 721,950.30 × 165,724.20
  4. Step 4: Simplify right side
    481,235.40x = 119,644,635,907.26
  5. Step 5: Solve for x
    x = 119,644,635,907.26/481,235.40
  6. Step 6: Final answer
    x = 248,619.77

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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.