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Finding the Fourth Proportional to 539,743.70, 809,615.55 and 165,766.10

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Solution

The fourth proportional to 539,743.70, 809,615.55 and 165,766.10 is: 248,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,743.70 : 809,615.55 = 165,766.10 : x
  2. Step 2: Convert to fraction form
    539,743.70/809,615.55 = 165,766.10/x
  3. Step 3: Cross multiply
    539,743.70x = 809,615.55 × 165,766.10
  4. Step 4: Simplify right side
    539,743.70x = 134,206,812,222.86
  5. Step 5: Solve for x
    x = 134,206,812,222.86/539,743.70
  6. Step 6: Final answer
    x = 248,649.15

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Double scale
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Similar ratio
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1.5x scale

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.