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Finding the Fourth Proportional to 253,677.46, 380,515.93 and 103,918.03

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Solution

The fourth proportional to 253,677.46, 380,515.93 and 103,918.03 is: 155,876.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,677.46 : 380,515.93 = 103,918.03 : x
  2. Step 2: Convert to fraction form
    253,677.46/380,515.93 = 103,918.03/x
  3. Step 3: Cross multiply
    253,677.46x = 380,515.93 × 103,918.03
  4. Step 4: Simplify right side
    253,677.46x = 39,542,465,829.22
  5. Step 5: Solve for x
    x = 39,542,465,829.22/253,677.46
  6. Step 6: Final answer
    x = 155,876.94

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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.