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Finding the Fourth Proportional to 443,617.90, 612,194.37 and 280,346.96

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Solution

The fourth proportional to 443,617.90, 612,194.37 and 280,346.96 is: 386,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,617.90 : 612,194.37 = 280,346.96 : x
  2. Step 2: Convert to fraction form
    443,617.90/612,194.37 = 280,346.96/x
  3. Step 3: Cross multiply
    443,617.90x = 612,194.37 × 280,346.96
  4. Step 4: Simplify right side
    443,617.90x = 171,626,830,558.62
  5. Step 5: Solve for x
    x = 171,626,830,558.62/443,617.90
  6. Step 6: Final answer
    x = 386,879.86

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1.5x scale

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.