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Finding the Fourth Proportional to 539,502.80, 809,140.80 and 273,012.80

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Solution

The fourth proportional to 539,502.80, 809,140.80 and 273,012.80 is: 409,461.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,502.80 : 809,140.80 = 273,012.80 : x
  2. Step 2: Convert to fraction form
    539,502.80/809,140.80 = 273,012.80/x
  3. Step 3: Cross multiply
    539,502.80x = 809,140.80 × 273,012.80
  4. Step 4: Simplify right side
    539,502.80x = 220,905,795,402.24
  5. Step 5: Solve for x
    x = 220,905,795,402.24/539,502.80
  6. Step 6: Final answer
    x = 409,461.81

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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.