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Finding the Fourth Proportional to 481,966.80, 722,820.60 and 145,006.80

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Solution

The fourth proportional to 481,966.80, 722,820.60 and 145,006.80 is: 217,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,966.80 : 722,820.60 = 145,006.80 : x
  2. Step 2: Convert to fraction form
    481,966.80/722,820.60 = 145,006.80/x
  3. Step 3: Cross multiply
    481,966.80x = 722,820.60 × 145,006.80
  4. Step 4: Simplify right side
    481,966.80x = 104,813,902,180.08
  5. Step 5: Solve for x
    x = 104,813,902,180.08/481,966.80
  6. Step 6: Final answer
    x = 217,471.21

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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.