Home / 385,245.06-531,609.31-215,446.38

Finding the Fourth Proportional to 385,245.06, 531,609.31 and 215,446.38

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Solution

The fourth proportional to 385,245.06, 531,609.31 and 215,446.38 is: 297,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,245.06 : 531,609.31 = 215,446.38 : x
  2. Step 2: Convert to fraction form
    385,245.06/531,609.31 = 215,446.38/x
  3. Step 3: Cross multiply
    385,245.06x = 531,609.31 × 215,446.38
  4. Step 4: Simplify right side
    385,245.06x = 114,533,297,678.52
  5. Step 5: Solve for x
    x = 114,533,297,678.52/385,245.06
  6. Step 6: Final answer
    x = 297,299.85

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1.5x scale

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.