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Finding the Fourth Proportional to 481,960.80, 722,811.60 and 145,000.80

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Solution

The fourth proportional to 481,960.80, 722,811.60 and 145,000.80 is: 217,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,960.80 : 722,811.60 = 145,000.80 : x
  2. Step 2: Convert to fraction form
    481,960.80/722,811.60 = 145,000.80/x
  3. Step 3: Cross multiply
    481,960.80x = 722,811.60 × 145,000.80
  4. Step 4: Simplify right side
    481,960.80x = 104,808,260,249.28
  5. Step 5: Solve for x
    x = 104,808,260,249.28/481,960.80
  6. Step 6: Final answer
    x = 217,462.21

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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.