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Finding the Fourth Proportional to 387,954.86, 581,932.61 and 185,503.33

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Solution

The fourth proportional to 387,954.86, 581,932.61 and 185,503.33 is: 278,255.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,954.86 : 581,932.61 = 185,503.33 : x
  2. Step 2: Convert to fraction form
    387,954.86/581,932.61 = 185,503.33/x
  3. Step 3: Cross multiply
    387,954.86x = 581,932.61 × 185,503.33
  4. Step 4: Simplify right side
    387,954.86x = 107,950,436,990.59
  5. Step 5: Solve for x
    x = 107,950,436,990.59/387,954.86
  6. Step 6: Final answer
    x = 278,255.15

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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.