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Finding the Fourth Proportional to 387,171.84, 534,422.43 and 250,965.48

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Solution

The fourth proportional to 387,171.84, 534,422.43 and 250,965.48 is: 346,413.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,171.84 : 534,422.43 = 250,965.48 : x
  2. Step 2: Convert to fraction form
    387,171.84/534,422.43 = 250,965.48/x
  3. Step 3: Cross multiply
    387,171.84x = 534,422.43 × 250,965.48
  4. Step 4: Simplify right side
    387,171.84x = 134,121,581,667.72
  5. Step 5: Solve for x
    x = 134,121,581,667.72/387,171.84
  6. Step 6: Final answer
    x = 346,413.58

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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.