Home / 379,960.12-570,163.96-140,242.78

Finding the Fourth Proportional to 379,960.12, 570,163.96 and 140,242.78

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Solution

The fourth proportional to 379,960.12, 570,163.96 and 140,242.78 is: 210,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,960.12 : 570,163.96 = 140,242.78 : x
  2. Step 2: Convert to fraction form
    379,960.12/570,163.96 = 140,242.78/x
  3. Step 3: Cross multiply
    379,960.12x = 570,163.96 × 140,242.78
  4. Step 4: Simplify right side
    379,960.12x = 79,961,378,806.21
  5. Step 5: Solve for x
    x = 79,961,378,806.21/379,960.12
  6. Step 6: Final answer
    x = 210,446.77

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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.