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Finding the Fourth Proportional to 481,230.40, 721,942.80 and 165,719.20

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Solution

The fourth proportional to 481,230.40, 721,942.80 and 165,719.20 is: 248,612.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,230.40 : 721,942.80 = 165,719.20 : x
  2. Step 2: Convert to fraction form
    481,230.40/721,942.80 = 165,719.20/x
  3. Step 3: Cross multiply
    481,230.40x = 721,942.80 × 165,719.20
  4. Step 4: Simplify right side
    481,230.40x = 119,639,783,261.76
  5. Step 5: Solve for x
    x = 119,639,783,261.76/481,230.40
  6. Step 6: Final answer
    x = 248,612.27

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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.