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Finding the Fourth Proportional to 539,007.48, 743,864.31 and 309,636.54

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Solution

The fourth proportional to 539,007.48, 743,864.31 and 309,636.54 is: 427,317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,007.48 : 743,864.31 = 309,636.54 : x
  2. Step 2: Convert to fraction form
    539,007.48/743,864.31 = 309,636.54/x
  3. Step 3: Cross multiply
    539,007.48x = 743,864.31 × 309,636.54
  4. Step 4: Simplify right side
    539,007.48x = 230,327,571,177.89
  5. Step 5: Solve for x
    x = 230,327,571,177.89/539,007.48
  6. Step 6: Final answer
    x = 427,317.95

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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.