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Finding the Fourth Proportional to 331,381.40, 457,311.54 and 180,478.28

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Solution

The fourth proportional to 331,381.40, 457,311.54 and 180,478.28 is: 249,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,381.40 : 457,311.54 = 180,478.28 : x
  2. Step 2: Convert to fraction form
    331,381.40/457,311.54 = 180,478.28/x
  3. Step 3: Cross multiply
    331,381.40x = 457,311.54 × 180,478.28
  4. Step 4: Simplify right side
    331,381.40x = 82,534,800,163.35
  5. Step 5: Solve for x
    x = 82,534,800,163.35/331,381.40
  6. Step 6: Final answer
    x = 249,062.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.