Home / 399,042.82-597,610.86-221,108.50

Finding the Fourth Proportional to 399,042.82, 597,610.86 and 221,108.50

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Solution

The fourth proportional to 399,042.82, 597,610.86 and 221,108.50 is: 331,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,042.82 : 597,610.86 = 221,108.50 : x
  2. Step 2: Convert to fraction form
    399,042.82/597,610.86 = 221,108.50/x
  3. Step 3: Cross multiply
    399,042.82x = 597,610.86 × 221,108.50
  4. Step 4: Simplify right side
    399,042.82x = 132,136,840,838.31
  5. Step 5: Solve for x
    x = 132,136,840,838.31/399,042.82
  6. Step 6: Final answer
    x = 331,134.49

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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.