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Finding the Fourth Proportional to 449,041.72, 619,677.57 and 306,051.56

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Solution

The fourth proportional to 449,041.72, 619,677.57 and 306,051.56 is: 422,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,041.72 : 619,677.57 = 306,051.56 : x
  2. Step 2: Convert to fraction form
    449,041.72/619,677.57 = 306,051.56/x
  3. Step 3: Cross multiply
    449,041.72x = 619,677.57 × 306,051.56
  4. Step 4: Simplify right side
    449,041.72x = 189,653,286,995.51
  5. Step 5: Solve for x
    x = 189,653,286,995.51/449,041.72
  6. Step 6: Final answer
    x = 422,351.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.