Home / 317,530.52-438,188.39-172,336.55

Finding the Fourth Proportional to 317,530.52, 438,188.39 and 172,336.55

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Solution

The fourth proportional to 317,530.52, 438,188.39 and 172,336.55 is: 237,822.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,530.52 : 438,188.39 = 172,336.55 : x
  2. Step 2: Convert to fraction form
    317,530.52/438,188.39 = 172,336.55/x
  3. Step 3: Cross multiply
    317,530.52x = 438,188.39 × 172,336.55
  4. Step 4: Simplify right side
    317,530.52x = 75,515,875,616.44
  5. Step 5: Solve for x
    x = 75,515,875,616.44/317,530.52
  6. Step 6: Final answer
    x = 237,822.42

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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.