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Finding the Fourth Proportional to 424,878.96, 637,351.20 and 109,338.96

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Solution

The fourth proportional to 424,878.96, 637,351.20 and 109,338.96 is: 164,016.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,878.96 : 637,351.20 = 109,338.96 : x
  2. Step 2: Convert to fraction form
    424,878.96/637,351.20 = 109,338.96/x
  3. Step 3: Cross multiply
    424,878.96x = 637,351.20 × 109,338.96
  4. Step 4: Simplify right side
    424,878.96x = 69,687,317,362.75
  5. Step 5: Solve for x
    x = 69,687,317,362.75/424,878.96
  6. Step 6: Final answer
    x = 164,016.87

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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.