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Finding the Fourth Proportional to 351,965.94, 486,113.93 and 238,591.86

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Solution

The fourth proportional to 351,965.94, 486,113.93 and 238,591.86 is: 329,528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,965.94 : 486,113.93 = 238,591.86 : x
  2. Step 2: Convert to fraction form
    351,965.94/486,113.93 = 238,591.86/x
  3. Step 3: Cross multiply
    351,965.94x = 486,113.93 × 238,591.86
  4. Step 4: Simplify right side
    351,965.94x = 115,982,825,537.65
  5. Step 5: Solve for x
    x = 115,982,825,537.65/351,965.94
  6. Step 6: Final answer
    x = 329,528.55

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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.