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Finding the Fourth Proportional to 539,702, 809,591.88 and 207,278

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Solution

The fourth proportional to 539,702, 809,591.88 and 207,278 is: 310,931.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,702 : 809,591.88 = 207,278 : x
  2. Step 2: Convert to fraction form
    539,702/809,591.88 = 207,278/x
  3. Step 3: Cross multiply
    539,702x = 809,591.88 × 207,278
  4. Step 4: Simplify right side
    539,702x = 167,810,585,702.64
  5. Step 5: Solve for x
    x = 167,810,585,702.64/539,702
  6. Step 6: Final answer
    x = 310,931.93

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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.