Home / 399,561.06-551,387.32-218,268.34

Finding the Fourth Proportional to 399,561.06, 551,387.32 and 218,268.34

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Solution

The fourth proportional to 399,561.06, 551,387.32 and 218,268.34 is: 301,206.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,561.06 : 551,387.32 = 218,268.34 : x
  2. Step 2: Convert to fraction form
    399,561.06/551,387.32 = 218,268.34/x
  3. Step 3: Cross multiply
    399,561.06x = 551,387.32 × 218,268.34
  4. Step 4: Simplify right side
    399,561.06x = 120,350,393,109.31
  5. Step 5: Solve for x
    x = 120,350,393,109.31/399,561.06
  6. Step 6: Final answer
    x = 301,206.51

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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.