Home / 399,623.27-551,480.49-218,338.16

Finding the Fourth Proportional to 399,623.27, 551,480.49 and 218,338.16

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Solution

The fourth proportional to 399,623.27, 551,480.49 and 218,338.16 is: 301,306.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,623.27 : 551,480.49 = 218,338.16 : x
  2. Step 2: Convert to fraction form
    399,623.27/551,480.49 = 218,338.16/x
  3. Step 3: Cross multiply
    399,623.27x = 551,480.49 × 218,338.16
  4. Step 4: Simplify right side
    399,623.27x = 120,409,232,705.10
  5. Step 5: Solve for x
    x = 120,409,232,705.10/399,623.27
  6. Step 6: Final answer
    x = 301,306.86

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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.