Home / 387,211.04-580,933.20-120,960.80

Finding the Fourth Proportional to 387,211.04, 580,933.20 and 120,960.80

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Solution

The fourth proportional to 387,211.04, 580,933.20 and 120,960.80 is: 181,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,211.04 : 580,933.20 = 120,960.80 : x
  2. Step 2: Convert to fraction form
    387,211.04/580,933.20 = 120,960.80/x
  3. Step 3: Cross multiply
    387,211.04x = 580,933.20 × 120,960.80
  4. Step 4: Simplify right side
    387,211.04x = 70,270,144,618.56
  5. Step 5: Solve for x
    x = 70,270,144,618.56/387,211.04
  6. Step 6: Final answer
    x = 181,477.64

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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.