Home / 385,091.25-531,429.26-215,325.37

Finding the Fourth Proportional to 385,091.25, 531,429.26 and 215,325.37

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Solution

The fourth proportional to 385,091.25, 531,429.26 and 215,325.37 is: 297,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,091.25 : 531,429.26 = 215,325.37 : x
  2. Step 2: Convert to fraction form
    385,091.25/531,429.26 = 215,325.37/x
  3. Step 3: Cross multiply
    385,091.25x = 531,429.26 × 215,325.37
  4. Step 4: Simplify right side
    385,091.25x = 114,430,201,625.99
  5. Step 5: Solve for x
    x = 114,430,201,625.99/385,091.25
  6. Step 6: Final answer
    x = 297,150.88

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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.