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Finding the Fourth Proportional to 253,242.95, 379,887.31 and 73,325.75

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Solution

The fourth proportional to 253,242.95, 379,887.31 and 73,325.75 is: 109,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,242.95 : 379,887.31 = 73,325.75 : x
  2. Step 2: Convert to fraction form
    253,242.95/379,887.31 = 73,325.75/x
  3. Step 3: Cross multiply
    253,242.95x = 379,887.31 × 73,325.75
  4. Step 4: Simplify right side
    253,242.95x = 27,855,521,921.23
  5. Step 5: Solve for x
    x = 27,855,521,921.23/253,242.95
  6. Step 6: Final answer
    x = 109,995.25

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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.