Home / 385,175.38-531,540.21-215,410.18

Finding the Fourth Proportional to 385,175.38, 531,540.21 and 215,410.18

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Solution

The fourth proportional to 385,175.38, 531,540.21 and 215,410.18 is: 297,265.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,175.38 : 531,540.21 = 215,410.18 : x
  2. Step 2: Convert to fraction form
    385,175.38/531,540.21 = 215,410.18/x
  3. Step 3: Cross multiply
    385,175.38x = 531,540.21 × 215,410.18
  4. Step 4: Simplify right side
    385,175.38x = 114,499,172,313.34
  5. Step 5: Solve for x
    x = 114,499,172,313.34/385,175.38
  6. Step 6: Final answer
    x = 297,265.03

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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.