Home / 631,091.20-946,406.40-210,380.80

Finding the Fourth Proportional to 631,091.20, 946,406.40 and 210,380.80

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Solution

The fourth proportional to 631,091.20, 946,406.40 and 210,380.80 is: 315,494.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,091.20 : 946,406.40 = 210,380.80 : x
  2. Step 2: Convert to fraction form
    631,091.20/946,406.40 = 210,380.80/x
  3. Step 3: Cross multiply
    631,091.20x = 946,406.40 × 210,380.80
  4. Step 4: Simplify right side
    631,091.20x = 199,105,735,557.12
  5. Step 5: Solve for x
    x = 199,105,735,557.12/631,091.20
  6. Step 6: Final answer
    x = 315,494.39

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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.