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Finding the Fourth Proportional to 486,072.18, 670,672.22 and 282,004.89

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Solution

The fourth proportional to 486,072.18, 670,672.22 and 282,004.89 is: 389,104.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,072.18 : 670,672.22 = 282,004.89 : x
  2. Step 2: Convert to fraction form
    486,072.18/670,672.22 = 282,004.89/x
  3. Step 3: Cross multiply
    486,072.18x = 670,672.22 × 282,004.89
  4. Step 4: Simplify right side
    486,072.18x = 189,132,844,217.13
  5. Step 5: Solve for x
    x = 189,132,844,217.13/486,072.18
  6. Step 6: Final answer
    x = 389,104.44

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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.