Home / 387,277.20-580,740.84-137,965.68

Finding the Fourth Proportional to 387,277.20, 580,740.84 and 137,965.68

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Solution

The fourth proportional to 387,277.20, 580,740.84 and 137,965.68 is: 206,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,277.20 : 580,740.84 = 137,965.68 : x
  2. Step 2: Convert to fraction form
    387,277.20/580,740.84 = 137,965.68/x
  3. Step 3: Cross multiply
    387,277.20x = 580,740.84 × 137,965.68
  4. Step 4: Simplify right side
    387,277.20x = 80,122,304,894.37
  5. Step 5: Solve for x
    x = 80,122,304,894.37/387,277.20
  6. Step 6: Final answer
    x = 206,886.19

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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.