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Finding the Fourth Proportional to 485,977.37, 729,072.67 and 149,043.37

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Solution

The fourth proportional to 485,977.37, 729,072.67 and 149,043.37 is: 223,597.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,977.37 : 729,072.67 = 149,043.37 : x
  2. Step 2: Convert to fraction form
    485,977.37/729,072.67 = 149,043.37/x
  3. Step 3: Cross multiply
    485,977.37x = 729,072.67 × 149,043.37
  4. Step 4: Simplify right side
    485,977.37x = 108,663,445,531.54
  5. Step 5: Solve for x
    x = 108,663,445,531.54/485,977.37
  6. Step 6: Final answer
    x = 223,597.75

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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.