Home / 209,610.53-315,828.14-172,990.83

Finding the Fourth Proportional to 209,610.53, 315,828.14 and 172,990.83

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Solution

The fourth proportional to 209,610.53, 315,828.14 and 172,990.83 is: 260,651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,610.53 : 315,828.14 = 172,990.83 : x
  2. Step 2: Convert to fraction form
    209,610.53/315,828.14 = 172,990.83/x
  3. Step 3: Cross multiply
    209,610.53x = 315,828.14 × 172,990.83
  4. Step 4: Simplify right side
    209,610.53x = 54,635,372,395.36
  5. Step 5: Solve for x
    x = 54,635,372,395.36/209,610.53
  6. Step 6: Final answer
    x = 260,651.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.