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Finding the Fourth Proportional to 253,453.80, 380,180.70 and 66,484.20

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Solution

The fourth proportional to 253,453.80, 380,180.70 and 66,484.20 is: 99,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,453.80 : 380,180.70 = 66,484.20 : x
  2. Step 2: Convert to fraction form
    253,453.80/380,180.70 = 66,484.20/x
  3. Step 3: Cross multiply
    253,453.80x = 380,180.70 × 66,484.20
  4. Step 4: Simplify right side
    253,453.80x = 25,276,009,694.94
  5. Step 5: Solve for x
    x = 25,276,009,694.94/253,453.80
  6. Step 6: Final answer
    x = 99,726.30

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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.