Home / 331,143.48-456,988.68-187,909.56

Finding the Fourth Proportional to 331,143.48, 456,988.68 and 187,909.56

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Solution

The fourth proportional to 331,143.48, 456,988.68 and 187,909.56 is: 259,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,143.48 : 456,988.68 = 187,909.56 : x
  2. Step 2: Convert to fraction form
    331,143.48/456,988.68 = 187,909.56/x
  3. Step 3: Cross multiply
    331,143.48x = 456,988.68 × 187,909.56
  4. Step 4: Simplify right side
    331,143.48x = 85,872,541,783.78
  5. Step 5: Solve for x
    x = 85,872,541,783.78/331,143.48
  6. Step 6: Final answer
    x = 259,321.25

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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.