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Finding the Fourth Proportional to 253,043.58, 379,268.88 and 103,190.34

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Solution

The fourth proportional to 253,043.58, 379,268.88 and 103,190.34 is: 154,664.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,043.58 : 379,268.88 = 103,190.34 : x
  2. Step 2: Convert to fraction form
    253,043.58/379,268.88 = 103,190.34/x
  3. Step 3: Cross multiply
    253,043.58x = 379,268.88 × 103,190.34
  4. Step 4: Simplify right side
    253,043.58x = 39,136,884,678.62
  5. Step 5: Solve for x
    x = 39,136,884,678.62/253,043.58
  6. Step 6: Final answer
    x = 154,664.60

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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.