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Finding the Fourth Proportional to 253,281.36, 379,781.60 and 103,626.64

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Solution

The fourth proportional to 253,281.36, 379,781.60 and 103,626.64 is: 155,382.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,281.36 : 379,781.60 = 103,626.64 : x
  2. Step 2: Convert to fraction form
    253,281.36/379,781.60 = 103,626.64/x
  3. Step 3: Cross multiply
    253,281.36x = 379,781.60 × 103,626.64
  4. Step 4: Simplify right side
    253,281.36x = 39,355,491,141.82
  5. Step 5: Solve for x
    x = 39,355,491,141.82/253,281.36
  6. Step 6: Final answer
    x = 155,382.50

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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.