Home / 399,344.19-551,117.34-218,072.97

Finding the Fourth Proportional to 399,344.19, 551,117.34 and 218,072.97

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Solution

The fourth proportional to 399,344.19, 551,117.34 and 218,072.97 is: 300,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,344.19 : 551,117.34 = 218,072.97 : x
  2. Step 2: Convert to fraction form
    399,344.19/551,117.34 = 218,072.97/x
  3. Step 3: Cross multiply
    399,344.19x = 551,117.34 × 218,072.97
  4. Step 4: Simplify right side
    399,344.19x = 120,183,795,152.30
  5. Step 5: Solve for x
    x = 120,183,795,152.30/399,344.19
  6. Step 6: Final answer
    x = 300,952.91

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1.5x scale

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.