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Finding the Fourth Proportional to 356,361.28, 534,606.72 and 178,990.72

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Solution

The fourth proportional to 356,361.28, 534,606.72 and 178,990.72 is: 268,518.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,361.28 : 534,606.72 = 178,990.72 : x
  2. Step 2: Convert to fraction form
    356,361.28/534,606.72 = 178,990.72/x
  3. Step 3: Cross multiply
    356,361.28x = 534,606.72 × 178,990.72
  4. Step 4: Simplify right side
    356,361.28x = 95,689,641,729.64
  5. Step 5: Solve for x
    x = 95,689,641,729.64/356,361.28
  6. Step 6: Final answer
    x = 268,518.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.