Home / 399,043.86-550,688.40-313,105.83

Finding the Fourth Proportional to 399,043.86, 550,688.40 and 313,105.83

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Solution

The fourth proportional to 399,043.86, 550,688.40 and 313,105.83 is: 432,092.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,043.86 : 550,688.40 = 313,105.83 : x
  2. Step 2: Convert to fraction form
    399,043.86/550,688.40 = 313,105.83/x
  3. Step 3: Cross multiply
    399,043.86x = 550,688.40 × 313,105.83
  4. Step 4: Simplify right side
    399,043.86x = 172,423,748,553.37
  5. Step 5: Solve for x
    x = 172,423,748,553.37/399,043.86
  6. Step 6: Final answer
    x = 432,092.22

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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.