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Finding the Fourth Proportional to 411,020.40, 616,530.60 and 115,532.40

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Solution

The fourth proportional to 411,020.40, 616,530.60 and 115,532.40 is: 173,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,020.40 : 616,530.60 = 115,532.40 : x
  2. Step 2: Convert to fraction form
    411,020.40/616,530.60 = 115,532.40/x
  3. Step 3: Cross multiply
    411,020.40x = 616,530.60 × 115,532.40
  4. Step 4: Simplify right side
    411,020.40x = 71,229,259,891.44
  5. Step 5: Solve for x
    x = 71,229,259,891.44/411,020.40
  6. Step 6: Final answer
    x = 173,298.60

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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.