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Finding the Fourth Proportional to 317,418.39, 438,015.96 and 174,187.62

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Solution

The fourth proportional to 317,418.39, 438,015.96 and 174,187.62 is: 240,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,418.39 : 438,015.96 = 174,187.62 : x
  2. Step 2: Convert to fraction form
    317,418.39/438,015.96 = 174,187.62/x
  3. Step 3: Cross multiply
    317,418.39x = 438,015.96 × 174,187.62
  4. Step 4: Simplify right side
    317,418.39x = 76,296,957,594.42
  5. Step 5: Solve for x
    x = 76,296,957,594.42/317,418.39
  6. Step 6: Final answer
    x = 240,367.16

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1.5x scale

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.