Home / 279,394.39-385,638.38-172,054.36

Finding the Fourth Proportional to 279,394.39, 385,638.38 and 172,054.36

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Solution

The fourth proportional to 279,394.39, 385,638.38 and 172,054.36 is: 237,480.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,394.39 : 385,638.38 = 172,054.36 : x
  2. Step 2: Convert to fraction form
    279,394.39/385,638.38 = 172,054.36/x
  3. Step 3: Cross multiply
    279,394.39x = 385,638.38 × 172,054.36
  4. Step 4: Simplify right side
    279,394.39x = 66,350,764,662.34
  5. Step 5: Solve for x
    x = 66,350,764,662.34/279,394.39
  6. Step 6: Final answer
    x = 237,480.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.