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Finding the Fourth Proportional to 606,145.70, 909,132.15 and 206,804.90

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Solution

The fourth proportional to 606,145.70, 909,132.15 and 206,804.90 is: 310,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,145.70 : 909,132.15 = 206,804.90 : x
  2. Step 2: Convert to fraction form
    606,145.70/909,132.15 = 206,804.90/x
  3. Step 3: Cross multiply
    606,145.70x = 909,132.15 × 206,804.90
  4. Step 4: Simplify right side
    606,145.70x = 188,012,983,367.54
  5. Step 5: Solve for x
    x = 188,012,983,367.54/606,145.70
  6. Step 6: Final answer
    x = 310,177.87

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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.