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Finding the Fourth Proportional to 449,043.34, 619,679.82 and 306,053.19

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Solution

The fourth proportional to 449,043.34, 619,679.82 and 306,053.19 is: 422,353.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,043.34 : 619,679.82 = 306,053.19 : x
  2. Step 2: Convert to fraction form
    449,043.34/619,679.82 = 306,053.19/x
  3. Step 3: Cross multiply
    449,043.34x = 619,679.82 × 306,053.19
  4. Step 4: Simplify right side
    449,043.34x = 189,654,985,689.63
  5. Step 5: Solve for x
    x = 189,654,985,689.63/449,043.34
  6. Step 6: Final answer
    x = 422,353.41

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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.