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Finding the Fourth Proportional to 331,710.01, 496,720.80 and 219,221.66

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Solution

The fourth proportional to 331,710.01, 496,720.80 and 219,221.66 is: 328,274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,710.01 : 496,720.80 = 219,221.66 : x
  2. Step 2: Convert to fraction form
    331,710.01/496,720.80 = 219,221.66/x
  3. Step 3: Cross multiply
    331,710.01x = 496,720.80 × 219,221.66
  4. Step 4: Simplify right side
    331,710.01x = 108,891,959,574.33
  5. Step 5: Solve for x
    x = 108,891,959,574.33/331,710.01
  6. Step 6: Final answer
    x = 328,274.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.