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Finding the Fourth Proportional to 379,958.11, 570,160.95 and 140,240.77

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Solution

The fourth proportional to 379,958.11, 570,160.95 and 140,240.77 is: 210,443.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,958.11 : 570,160.95 = 140,240.77 : x
  2. Step 2: Convert to fraction form
    379,958.11/570,160.95 = 140,240.77/x
  3. Step 3: Cross multiply
    379,958.11x = 570,160.95 × 140,240.77
  4. Step 4: Simplify right side
    379,958.11x = 79,959,810,651.93
  5. Step 5: Solve for x
    x = 79,959,810,651.93/379,958.11
  6. Step 6: Final answer
    x = 210,443.75

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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.