Home / 393,055.25-542,418.05-223,298.69

Finding the Fourth Proportional to 393,055.25, 542,418.05 and 223,298.69

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Solution

The fourth proportional to 393,055.25, 542,418.05 and 223,298.69 is: 308,153.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,055.25 : 542,418.05 = 223,298.69 : x
  2. Step 2: Convert to fraction form
    393,055.25/542,418.05 = 223,298.69/x
  3. Step 3: Cross multiply
    393,055.25x = 542,418.05 × 223,298.69
  4. Step 4: Simplify right side
    393,055.25x = 121,121,237,843.51
  5. Step 5: Solve for x
    x = 121,121,237,843.51/393,055.25
  6. Step 6: Final answer
    x = 308,153.22

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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.