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Finding the Fourth Proportional to 315,268.89, 435,067.42 and 172,031.32

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Solution

The fourth proportional to 315,268.89, 435,067.42 and 172,031.32 is: 237,401.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,268.89 : 435,067.42 = 172,031.32 : x
  2. Step 2: Convert to fraction form
    315,268.89/435,067.42 = 172,031.32/x
  3. Step 3: Cross multiply
    315,268.89x = 435,067.42 × 172,031.32
  4. Step 4: Simplify right side
    315,268.89x = 74,845,222,551.59
  5. Step 5: Solve for x
    x = 74,845,222,551.59/315,268.89
  6. Step 6: Final answer
    x = 237,401.23

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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.