Home / 399,306.35-551,034.01-218,011.34

Finding the Fourth Proportional to 399,306.35, 551,034.01 and 218,011.34

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Solution

The fourth proportional to 399,306.35, 551,034.01 and 218,011.34 is: 300,850.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,306.35 : 551,034.01 = 218,011.34 : x
  2. Step 2: Convert to fraction form
    399,306.35/551,034.01 = 218,011.34/x
  3. Step 3: Cross multiply
    399,306.35x = 551,034.01 × 218,011.34
  4. Step 4: Simplify right side
    399,306.35x = 120,131,662,905.67
  5. Step 5: Solve for x
    x = 120,131,662,905.67/399,306.35
  6. Step 6: Final answer
    x = 300,850.87

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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.