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Finding the Fourth Proportional to 449,888.96, 620,822.40 and 248,672

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Solution

The fourth proportional to 449,888.96, 620,822.40 and 248,672 is: 343,153.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,888.96 : 620,822.40 = 248,672 : x
  2. Step 2: Convert to fraction form
    449,888.96/620,822.40 = 248,672/x
  3. Step 3: Cross multiply
    449,888.96x = 620,822.40 × 248,672
  4. Step 4: Simplify right side
    449,888.96x = 154,381,147,852.80
  5. Step 5: Solve for x
    x = 154,381,147,852.80/449,888.96
  6. Step 6: Final answer
    x = 343,153.89

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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.