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Finding the Fourth Proportional to 539,489, 809,272.38 and 207,065

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Solution

The fourth proportional to 539,489, 809,272.38 and 207,065 is: 310,612.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,489 : 809,272.38 = 207,065 : x
  2. Step 2: Convert to fraction form
    539,489/809,272.38 = 207,065/x
  3. Step 3: Cross multiply
    539,489x = 809,272.38 × 207,065
  4. Step 4: Simplify right side
    539,489x = 167,571,985,364.70
  5. Step 5: Solve for x
    x = 167,571,985,364.70/539,489
  6. Step 6: Final answer
    x = 310,612.42

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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.