Home / 387,209.04-580,930.20-120,958.80

Finding the Fourth Proportional to 387,209.04, 580,930.20 and 120,958.80

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Solution

The fourth proportional to 387,209.04, 580,930.20 and 120,958.80 is: 181,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,209.04 : 580,930.20 = 120,958.80 : x
  2. Step 2: Convert to fraction form
    387,209.04/580,930.20 = 120,958.80/x
  3. Step 3: Cross multiply
    387,209.04x = 580,930.20 × 120,958.80
  4. Step 4: Simplify right side
    387,209.04x = 70,268,619,875.76
  5. Step 5: Solve for x
    x = 70,268,619,875.76/387,209.04
  6. Step 6: Final answer
    x = 181,474.64

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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.