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Finding the Fourth Proportional to 253,677.08, 380,485.38 and 66,703.16

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Solution

The fourth proportional to 253,677.08, 380,485.38 and 66,703.16 is: 100,046.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,677.08 : 380,485.38 = 66,703.16 : x
  2. Step 2: Convert to fraction form
    253,677.08/380,485.38 = 66,703.16/x
  3. Step 3: Cross multiply
    253,677.08x = 380,485.38 × 66,703.16
  4. Step 4: Simplify right side
    253,677.08x = 25,379,577,179.80
  5. Step 5: Solve for x
    x = 25,379,577,179.80/253,677.08
  6. Step 6: Final answer
    x = 100,046.79

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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.