Home / 205,827.80-308,741.70-172,002.20

Finding the Fourth Proportional to 205,827.80, 308,741.70 and 172,002.20

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Solution

The fourth proportional to 205,827.80, 308,741.70 and 172,002.20 is: 258,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,827.80 : 308,741.70 = 172,002.20 : x
  2. Step 2: Convert to fraction form
    205,827.80/308,741.70 = 172,002.20/x
  3. Step 3: Cross multiply
    205,827.80x = 308,741.70 × 172,002.20
  4. Step 4: Simplify right side
    205,827.80x = 53,104,251,631.74
  5. Step 5: Solve for x
    x = 53,104,251,631.74/205,827.80
  6. Step 6: Final answer
    x = 258,003.30

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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.