Home / 279,131.90-385,206.10-171,638.42

Finding the Fourth Proportional to 279,131.90, 385,206.10 and 171,638.42

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Solution

The fourth proportional to 279,131.90, 385,206.10 and 171,638.42 is: 236,863.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,131.90 : 385,206.10 = 171,638.42 : x
  2. Step 2: Convert to fraction form
    279,131.90/385,206.10 = 171,638.42/x
  3. Step 3: Cross multiply
    279,131.90x = 385,206.10 × 171,638.42
  4. Step 4: Simplify right side
    279,131.90x = 66,116,164,023.24
  5. Step 5: Solve for x
    x = 66,116,164,023.24/279,131.90
  6. Step 6: Final answer
    x = 236,863.52

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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.