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Finding the Fourth Proportional to 371,462.40, 557,121.60 and 105,157.44

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Solution

The fourth proportional to 371,462.40, 557,121.60 and 105,157.44 is: 157,715.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,462.40 : 557,121.60 = 105,157.44 : x
  2. Step 2: Convert to fraction form
    371,462.40/557,121.60 = 105,157.44/x
  3. Step 3: Cross multiply
    371,462.40x = 557,121.60 × 105,157.44
  4. Step 4: Simplify right side
    371,462.40x = 58,585,481,224.70
  5. Step 5: Solve for x
    x = 58,585,481,224.70/371,462.40
  6. Step 6: Final answer
    x = 157,715.78

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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.