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Finding the Fourth Proportional to 253,887.86, 380,270.23 and 103,672.64

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Solution

The fourth proportional to 253,887.86, 380,270.23 and 103,672.64 is: 155,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,887.86 : 380,270.23 = 103,672.64 : x
  2. Step 2: Convert to fraction form
    253,887.86/380,270.23 = 103,672.64/x
  3. Step 3: Cross multiply
    253,887.86x = 380,270.23 × 103,672.64
  4. Step 4: Simplify right side
    253,887.86x = 39,423,619,349.00
  5. Step 5: Solve for x
    x = 39,423,619,349.00/253,887.86
  6. Step 6: Final answer
    x = 155,279.65

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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.