Home / 207,310.86-311,579.73-172,001.21

Finding the Fourth Proportional to 207,310.86, 311,579.73 and 172,001.21

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Solution

The fourth proportional to 207,310.86, 311,579.73 and 172,001.21 is: 258,510.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,310.86 : 311,579.73 = 172,001.21 : x
  2. Step 2: Convert to fraction form
    207,310.86/311,579.73 = 172,001.21/x
  3. Step 3: Cross multiply
    207,310.86x = 311,579.73 × 172,001.21
  4. Step 4: Simplify right side
    207,310.86x = 53,592,089,013.57
  5. Step 5: Solve for x
    x = 53,592,089,013.57/207,310.86
  6. Step 6: Final answer
    x = 258,510.77

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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.