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Finding the Fourth Proportional to 539,344.40, 809,308.20 and 239,871.20

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Solution

The fourth proportional to 539,344.40, 809,308.20 and 239,871.20 is: 359,936.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,344.40 : 809,308.20 = 239,871.20 : x
  2. Step 2: Convert to fraction form
    539,344.40/809,308.20 = 239,871.20/x
  3. Step 3: Cross multiply
    539,344.40x = 809,308.20 × 239,871.20
  4. Step 4: Simplify right side
    539,344.40x = 194,129,729,103.84
  5. Step 5: Solve for x
    x = 194,129,729,103.84/539,344.40
  6. Step 6: Final answer
    x = 359,936.49

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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.