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Finding the Fourth Proportional to 317,778.26, 438,427.26 and 179,938.42

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Solution

The fourth proportional to 317,778.26, 438,427.26 and 179,938.42 is: 248,254.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,778.26 : 438,427.26 = 179,938.42 : x
  2. Step 2: Convert to fraction form
    317,778.26/438,427.26 = 179,938.42/x
  3. Step 3: Cross multiply
    317,778.26x = 438,427.26 × 179,938.42
  4. Step 4: Simplify right side
    317,778.26x = 78,889,907,353.26
  5. Step 5: Solve for x
    x = 78,889,907,353.26/317,778.26
  6. Step 6: Final answer
    x = 248,254.57

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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.