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Finding the Fourth Proportional to 539,551.80, 809,327.70 and 259,615.80

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Solution

The fourth proportional to 539,551.80, 809,327.70 and 259,615.80 is: 389,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,551.80 : 809,327.70 = 259,615.80 : x
  2. Step 2: Convert to fraction form
    539,551.80/809,327.70 = 259,615.80/x
  3. Step 3: Cross multiply
    539,551.80x = 809,327.70 × 259,615.80
  4. Step 4: Simplify right side
    539,551.80x = 210,114,258,297.66
  5. Step 5: Solve for x
    x = 210,114,258,297.66/539,551.80
  6. Step 6: Final answer
    x = 389,423.70

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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.