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Finding the Fourth Proportional to 539,888.20, 809,870.70 and 165,910.60

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Solution

The fourth proportional to 539,888.20, 809,870.70 and 165,910.60 is: 248,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,888.20 : 809,870.70 = 165,910.60 : x
  2. Step 2: Convert to fraction form
    539,888.20/809,870.70 = 165,910.60/x
  3. Step 3: Cross multiply
    539,888.20x = 809,870.70 × 165,910.60
  4. Step 4: Simplify right side
    539,888.20x = 134,366,133,759.42
  5. Step 5: Solve for x
    x = 134,366,133,759.42/539,888.20
  6. Step 6: Final answer
    x = 248,877.70

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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.