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Finding the Fourth Proportional to 309,791.40, 464,085.90 and 181,397.40

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Solution

The fourth proportional to 309,791.40, 464,085.90 and 181,397.40 is: 271,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,791.40 : 464,085.90 = 181,397.40 : x
  2. Step 2: Convert to fraction form
    309,791.40/464,085.90 = 181,397.40/x
  3. Step 3: Cross multiply
    309,791.40x = 464,085.90 × 181,397.40
  4. Step 4: Simplify right side
    309,791.40x = 84,183,975,636.66
  5. Step 5: Solve for x
    x = 84,183,975,636.66/309,791.40
  6. Step 6: Final answer
    x = 271,744.07

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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.