Home / 399,329.13-551,096.49-218,057.88

Finding the Fourth Proportional to 399,329.13, 551,096.49 and 218,057.88

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Solution

The fourth proportional to 399,329.13, 551,096.49 and 218,057.88 is: 300,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,329.13 : 551,096.49 = 218,057.88 : x
  2. Step 2: Convert to fraction form
    399,329.13/551,096.49 = 218,057.88/x
  3. Step 3: Cross multiply
    399,329.13x = 551,096.49 × 218,057.88
  4. Step 4: Simplify right side
    399,329.13x = 120,170,932,284.84
  5. Step 5: Solve for x
    x = 120,170,932,284.84/399,329.13
  6. Step 6: Final answer
    x = 300,932.05

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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.