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Finding the Fourth Proportional to 545,370.85, 752,604.60 and 315,959.41

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Solution

The fourth proportional to 545,370.85, 752,604.60 and 315,959.41 is: 436,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,370.85 : 752,604.60 = 315,959.41 : x
  2. Step 2: Convert to fraction form
    545,370.85/752,604.60 = 315,959.41/x
  3. Step 3: Cross multiply
    545,370.85x = 752,604.60 × 315,959.41
  4. Step 4: Simplify right side
    545,370.85x = 237,792,505,379.29
  5. Step 5: Solve for x
    x = 237,792,505,379.29/545,370.85
  6. Step 6: Final answer
    x = 436,019.83

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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.