Home / 331,387.97-457,299.10-188,129.21

Finding the Fourth Proportional to 331,387.97, 457,299.10 and 188,129.21

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Solution

The fourth proportional to 331,387.97, 457,299.10 and 188,129.21 is: 259,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,387.97 : 457,299.10 = 188,129.21 : x
  2. Step 2: Convert to fraction form
    331,387.97/457,299.10 = 188,129.21/x
  3. Step 3: Cross multiply
    331,387.97x = 457,299.10 × 188,129.21
  4. Step 4: Simplify right side
    331,387.97x = 86,031,316,803.14
  5. Step 5: Solve for x
    x = 86,031,316,803.14/331,387.97
  6. Step 6: Final answer
    x = 259,609.05

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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.