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Finding the Fourth Proportional to 303,361.10, 454,998.45 and 103,690.70

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Solution

The fourth proportional to 303,361.10, 454,998.45 and 103,690.70 is: 155,521.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,361.10 : 454,998.45 = 103,690.70 : x
  2. Step 2: Convert to fraction form
    303,361.10/454,998.45 = 103,690.70/x
  3. Step 3: Cross multiply
    303,361.10x = 454,998.45 × 103,690.70
  4. Step 4: Simplify right side
    303,361.10x = 47,179,107,779.42
  5. Step 5: Solve for x
    x = 47,179,107,779.42/303,361.10
  6. Step 6: Final answer
    x = 155,521.28

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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.