Home / 278,997.13-384,999.69-151,671.61

Finding the Fourth Proportional to 278,997.13, 384,999.69 and 151,671.61

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Solution

The fourth proportional to 278,997.13, 384,999.69 and 151,671.61 is: 209,297.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,997.13 : 384,999.69 = 151,671.61 : x
  2. Step 2: Convert to fraction form
    278,997.13/384,999.69 = 151,671.61/x
  3. Step 3: Cross multiply
    278,997.13x = 384,999.69 × 151,671.61
  4. Step 4: Simplify right side
    278,997.13x = 58,393,522,831.80
  5. Step 5: Solve for x
    x = 58,393,522,831.80/278,997.13
  6. Step 6: Final answer
    x = 209,297.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.