Home / 205,828.30-308,742.45-172,002.70

Finding the Fourth Proportional to 205,828.30, 308,742.45 and 172,002.70

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Solution

The fourth proportional to 205,828.30, 308,742.45 and 172,002.70 is: 258,004.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,828.30 : 308,742.45 = 172,002.70 : x
  2. Step 2: Convert to fraction form
    205,828.30/308,742.45 = 172,002.70/x
  3. Step 3: Cross multiply
    205,828.30x = 308,742.45 × 172,002.70
  4. Step 4: Simplify right side
    205,828.30x = 53,104,535,004.62
  5. Step 5: Solve for x
    x = 53,104,535,004.62/205,828.30
  6. Step 6: Final answer
    x = 258,004.05

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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.