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Finding the Fourth Proportional to 317,663.88, 438,383.22 and 174,424.47

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Solution

The fourth proportional to 317,663.88, 438,383.22 and 174,424.47 is: 240,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,663.88 : 438,383.22 = 174,424.47 : x
  2. Step 2: Convert to fraction form
    317,663.88/438,383.22 = 174,424.47/x
  3. Step 3: Cross multiply
    317,663.88x = 438,383.22 × 174,424.47
  4. Step 4: Simplify right side
    317,663.88x = 76,464,760,805.39
  5. Step 5: Solve for x
    x = 76,464,760,805.39/317,663.88
  6. Step 6: Final answer
    x = 240,709.65

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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.