Home / 279,587.04-385,860.96-172,135.68

Finding the Fourth Proportional to 279,587.04, 385,860.96 and 172,135.68

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Solution

The fourth proportional to 279,587.04, 385,860.96 and 172,135.68 is: 237,566.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,587.04 : 385,860.96 = 172,135.68 : x
  2. Step 2: Convert to fraction form
    279,587.04/385,860.96 = 172,135.68/x
  3. Step 3: Cross multiply
    279,587.04x = 385,860.96 × 172,135.68
  4. Step 4: Simplify right side
    279,587.04x = 66,420,438,735.05
  5. Step 5: Solve for x
    x = 66,420,438,735.05/279,587.04
  6. Step 6: Final answer
    x = 237,566.23

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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.