Home / 385,311.93-531,722.52-213,229.86

Finding the Fourth Proportional to 385,311.93, 531,722.52 and 213,229.86

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Solution

The fourth proportional to 385,311.93, 531,722.52 and 213,229.86 is: 294,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,311.93 : 531,722.52 = 213,229.86 : x
  2. Step 2: Convert to fraction form
    385,311.93/531,722.52 = 213,229.86/x
  3. Step 3: Cross multiply
    385,311.93x = 531,722.52 × 213,229.86
  4. Step 4: Simplify right side
    385,311.93x = 113,379,118,498.45
  5. Step 5: Solve for x
    x = 113,379,118,498.45/385,311.93
  6. Step 6: Final answer
    x = 294,252.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.