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Finding the Fourth Proportional to 343,358.84, 515,015.68 and 118,667

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Solution

The fourth proportional to 343,358.84, 515,015.68 and 118,667 is: 177,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,358.84 : 515,015.68 = 118,667 : x
  2. Step 2: Convert to fraction form
    343,358.84/515,015.68 = 118,667/x
  3. Step 3: Cross multiply
    343,358.84x = 515,015.68 × 118,667
  4. Step 4: Simplify right side
    343,358.84x = 61,115,365,698.56
  5. Step 5: Solve for x
    x = 61,115,365,698.56/343,358.84
  6. Step 6: Final answer
    x = 177,992.70

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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.