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Finding the Fourth Proportional to 539,491, 809,275.38 and 207,067

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Solution

The fourth proportional to 539,491, 809,275.38 and 207,067 is: 310,615.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,491 : 809,275.38 = 207,067 : x
  2. Step 2: Convert to fraction form
    539,491/809,275.38 = 207,067/x
  3. Step 3: Cross multiply
    539,491x = 809,275.38 × 207,067
  4. Step 4: Simplify right side
    539,491x = 167,574,225,110.46
  5. Step 5: Solve for x
    x = 167,574,225,110.46/539,491
  6. Step 6: Final answer
    x = 310,615.42

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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.