Home / 385,306.27-531,703.79-213,221.16

Finding the Fourth Proportional to 385,306.27, 531,703.79 and 213,221.16

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Solution

The fourth proportional to 385,306.27, 531,703.79 and 213,221.16 is: 294,234.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,306.27 : 531,703.79 = 213,221.16 : x
  2. Step 2: Convert to fraction form
    385,306.27/531,703.79 = 213,221.16/x
  3. Step 3: Cross multiply
    385,306.27x = 531,703.79 × 213,221.16
  4. Step 4: Simplify right side
    385,306.27x = 113,370,499,813.04
  5. Step 5: Solve for x
    x = 113,370,499,813.04/385,306.27
  6. Step 6: Final answer
    x = 294,234.77

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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.