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Finding the Fourth Proportional to 605,121.92, 907,781.38 and 178,700.86

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Solution

The fourth proportional to 605,121.92, 907,781.38 and 178,700.86 is: 268,080.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,121.92 : 907,781.38 = 178,700.86 : x
  2. Step 2: Convert to fraction form
    605,121.92/907,781.38 = 178,700.86/x
  3. Step 3: Cross multiply
    605,121.92x = 907,781.38 × 178,700.86
  4. Step 4: Simplify right side
    605,121.92x = 162,221,313,297.99
  5. Step 5: Solve for x
    x = 162,221,313,297.99/605,121.92
  6. Step 6: Final answer
    x = 268,080.38

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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.