Home / 399,319.07-551,056.11-218,030.43

Finding the Fourth Proportional to 399,319.07, 551,056.11 and 218,030.43

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Solution

The fourth proportional to 399,319.07, 551,056.11 and 218,030.43 is: 300,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,319.07 : 551,056.11 = 218,030.43 : x
  2. Step 2: Convert to fraction form
    399,319.07/551,056.11 = 218,030.43/x
  3. Step 3: Cross multiply
    399,319.07x = 551,056.11 × 218,030.43
  4. Step 4: Simplify right side
    399,319.07x = 120,147,003,092.70
  5. Step 5: Solve for x
    x = 120,147,003,092.70/399,319.07
  6. Step 6: Final answer
    x = 300,879.71

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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.