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Finding the Fourth Proportional to 317,481.28, 438,123.80 and 174,241.68

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Solution

The fourth proportional to 317,481.28, 438,123.80 and 174,241.68 is: 240,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,481.28 : 438,123.80 = 174,241.68 : x
  2. Step 2: Convert to fraction form
    317,481.28/438,123.80 = 174,241.68/x
  3. Step 3: Cross multiply
    317,481.28x = 438,123.80 × 174,241.68
  4. Step 4: Simplify right side
    317,481.28x = 76,339,426,959.98
  5. Step 5: Solve for x
    x = 76,339,426,959.98/317,481.28
  6. Step 6: Final answer
    x = 240,453.32

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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.