Home / 320,986.14-443,103.93-212,156.03

Finding the Fourth Proportional to 320,986.14, 443,103.93 and 212,156.03

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Solution

The fourth proportional to 320,986.14, 443,103.93 and 212,156.03 is: 292,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,986.14 : 443,103.93 = 212,156.03 : x
  2. Step 2: Convert to fraction form
    320,986.14/443,103.93 = 212,156.03/x
  3. Step 3: Cross multiply
    320,986.14x = 443,103.93 × 212,156.03
  4. Step 4: Simplify right side
    320,986.14x = 94,007,168,450.68
  5. Step 5: Solve for x
    x = 94,007,168,450.68/320,986.14
  6. Step 6: Final answer
    x = 292,869.87

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1.5x scale

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.