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Finding the Fourth Proportional to 253,884.49, 380,265.18 and 103,669.26

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Solution

The fourth proportional to 253,884.49, 380,265.18 and 103,669.26 is: 155,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,884.49 : 380,265.18 = 103,669.26 : x
  2. Step 2: Convert to fraction form
    253,884.49/380,265.18 = 103,669.26/x
  3. Step 3: Cross multiply
    253,884.49x = 380,265.18 × 103,669.26
  4. Step 4: Simplify right side
    253,884.49x = 39,421,807,999.61
  5. Step 5: Solve for x
    x = 39,421,807,999.61/253,884.49
  6. Step 6: Final answer
    x = 155,274.58

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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.