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Finding the Fourth Proportional to 449,812.31, 620,740.46 and 245,864.57

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Solution

The fourth proportional to 449,812.31, 620,740.46 and 245,864.57 is: 339,292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,812.31 : 620,740.46 = 245,864.57 : x
  2. Step 2: Convert to fraction form
    449,812.31/620,740.46 = 245,864.57/x
  3. Step 3: Cross multiply
    449,812.31x = 620,740.46 × 245,864.57
  4. Step 4: Simplify right side
    449,812.31x = 152,618,083,790.46
  5. Step 5: Solve for x
    x = 152,618,083,790.46/449,812.31
  6. Step 6: Final answer
    x = 339,292.82

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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.