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Finding the Fourth Proportional to 331,642.44, 457,610.54 and 186,428.88

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Solution

The fourth proportional to 331,642.44, 457,610.54 and 186,428.88 is: 257,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,642.44 : 457,610.54 = 186,428.88 : x
  2. Step 2: Convert to fraction form
    331,642.44/457,610.54 = 186,428.88/x
  3. Step 3: Cross multiply
    331,642.44x = 457,610.54 × 186,428.88
  4. Step 4: Simplify right side
    331,642.44x = 85,311,819,516.25
  5. Step 5: Solve for x
    x = 85,311,819,516.25/331,642.44
  6. Step 6: Final answer
    x = 257,240.36

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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.