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Finding the Fourth Proportional to 299,430.30, 449,145.45 and 181,040.70

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Solution

The fourth proportional to 299,430.30, 449,145.45 and 181,040.70 is: 271,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,430.30 : 449,145.45 = 181,040.70 : x
  2. Step 2: Convert to fraction form
    299,430.30/449,145.45 = 181,040.70/x
  3. Step 3: Cross multiply
    299,430.30x = 449,145.45 × 181,040.70
  4. Step 4: Simplify right side
    299,430.30x = 81,313,606,669.82
  5. Step 5: Solve for x
    x = 81,313,606,669.82/299,430.30
  6. Step 6: Final answer
    x = 271,561.05

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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.