Home / 280,929.75-421,395.03-114,717.75

Finding the Fourth Proportional to 280,929.75, 421,395.03 and 114,717.75

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Solution

The fourth proportional to 280,929.75, 421,395.03 and 114,717.75 is: 172,076.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,929.75 : 421,395.03 = 114,717.75 : x
  2. Step 2: Convert to fraction form
    280,929.75/421,395.03 = 114,717.75/x
  3. Step 3: Cross multiply
    280,929.75x = 421,395.03 × 114,717.75
  4. Step 4: Simplify right side
    280,929.75x = 48,341,489,702.78
  5. Step 5: Solve for x
    x = 48,341,489,702.78/280,929.75
  6. Step 6: Final answer
    x = 172,076.79

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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.