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Finding the Fourth Proportional to 481,210.20, 721,880.10 and 165,763.80

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Solution

The fourth proportional to 481,210.20, 721,880.10 and 165,763.80 is: 248,668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,210.20 : 721,880.10 = 165,763.80 : x
  2. Step 2: Convert to fraction form
    481,210.20/721,880.10 = 165,763.80/x
  3. Step 3: Cross multiply
    481,210.20x = 721,880.10 × 165,763.80
  4. Step 4: Simplify right side
    481,210.20x = 119,661,588,520.38
  5. Step 5: Solve for x
    x = 119,661,588,520.38/481,210.20
  6. Step 6: Final answer
    x = 248,668.02

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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.