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Finding the Fourth Proportional to 470,241.33, 649,131.48 and 317,486.31

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Solution

The fourth proportional to 470,241.33, 649,131.48 and 317,486.31 is: 438,265.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,241.33 : 649,131.48 = 317,486.31 : x
  2. Step 2: Convert to fraction form
    470,241.33/649,131.48 = 317,486.31/x
  3. Step 3: Cross multiply
    470,241.33x = 649,131.48 × 317,486.31
  4. Step 4: Simplify right side
    470,241.33x = 206,090,358,290.04
  5. Step 5: Solve for x
    x = 206,090,358,290.04/470,241.33
  6. Step 6: Final answer
    x = 438,265.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.