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Finding the Fourth Proportional to 539,752.84, 809,909.45 and 220,139.19

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Solution

The fourth proportional to 539,752.84, 809,909.45 and 220,139.19 is: 330,323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,752.84 : 809,909.45 = 220,139.19 : x
  2. Step 2: Convert to fraction form
    539,752.84/809,909.45 = 220,139.19/x
  3. Step 3: Cross multiply
    539,752.84x = 809,909.45 × 220,139.19
  4. Step 4: Simplify right side
    539,752.84x = 178,292,810,846.69
  5. Step 5: Solve for x
    x = 178,292,810,846.69/539,752.84
  6. Step 6: Final answer
    x = 330,323.06

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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.