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Finding the Fourth Proportional to 331,383.30, 457,308.90 and 180,480.30

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Solution

The fourth proportional to 331,383.30, 457,308.90 and 180,480.30 is: 249,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,383.30 : 457,308.90 = 180,480.30 : x
  2. Step 2: Convert to fraction form
    331,383.30/457,308.90 = 180,480.30/x
  3. Step 3: Cross multiply
    331,383.30x = 457,308.90 × 180,480.30
  4. Step 4: Simplify right side
    331,383.30x = 82,535,247,464.67
  5. Step 5: Solve for x
    x = 82,535,247,464.67/331,383.30
  6. Step 6: Final answer
    x = 249,062.78

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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.