Home / 385,222.66-531,604.38-215,456.79

Finding the Fourth Proportional to 385,222.66, 531,604.38 and 215,456.79

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Solution

The fourth proportional to 385,222.66, 531,604.38 and 215,456.79 is: 297,328.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,222.66 : 531,604.38 = 215,456.79 : x
  2. Step 2: Convert to fraction form
    385,222.66/531,604.38 = 215,456.79/x
  3. Step 3: Cross multiply
    385,222.66x = 531,604.38 × 215,456.79
  4. Step 4: Simplify right side
    385,222.66x = 114,537,770,606.72
  5. Step 5: Solve for x
    x = 114,537,770,606.72/385,222.66
  6. Step 6: Final answer
    x = 297,328.75

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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.