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Finding the Fourth Proportional to 253,449, 380,158.74 and 66,460.44

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Solution

The fourth proportional to 253,449, 380,158.74 and 66,460.44 is: 99,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,449 : 380,158.74 = 66,460.44 : x
  2. Step 2: Convert to fraction form
    253,449/380,158.74 = 66,460.44/x
  3. Step 3: Cross multiply
    253,449x = 380,158.74 × 66,460.44
  4. Step 4: Simplify right side
    253,449x = 25,265,517,130.25
  5. Step 5: Solve for x
    x = 25,265,517,130.25/253,449
  6. Step 6: Final answer
    x = 99,686.79

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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.