Home / 205,845.66-308,953.02-172,321.52

Finding the Fourth Proportional to 205,845.66, 308,953.02 and 172,321.52

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Solution

The fourth proportional to 205,845.66, 308,953.02 and 172,321.52 is: 258,636.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,845.66 : 308,953.02 = 172,321.52 : x
  2. Step 2: Convert to fraction form
    205,845.66/308,953.02 = 172,321.52/x
  3. Step 3: Cross multiply
    205,845.66x = 308,953.02 × 172,321.52
  4. Step 4: Simplify right side
    205,845.66x = 53,239,254,014.99
  5. Step 5: Solve for x
    x = 53,239,254,014.99/205,845.66
  6. Step 6: Final answer
    x = 258,636.76

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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.