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Finding the Fourth Proportional to 485,176.96, 669,542.52 and 270,319.60

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Solution

The fourth proportional to 485,176.96, 669,542.52 and 270,319.60 is: 373,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,176.96 : 669,542.52 = 270,319.60 : x
  2. Step 2: Convert to fraction form
    485,176.96/669,542.52 = 270,319.60/x
  3. Step 3: Cross multiply
    485,176.96x = 669,542.52 × 270,319.60
  4. Step 4: Simplify right side
    485,176.96x = 180,990,466,189.39
  5. Step 5: Solve for x
    x = 180,990,466,189.39/485,176.96
  6. Step 6: Final answer
    x = 373,040.11

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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.