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Finding the Fourth Proportional to 317,855.16, 438,631.65 and 174,615.48

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Solution

The fourth proportional to 317,855.16, 438,631.65 and 174,615.48 is: 240,964.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,855.16 : 438,631.65 = 174,615.48 : x
  2. Step 2: Convert to fraction form
    317,855.16/438,631.65 = 174,615.48/x
  3. Step 3: Cross multiply
    317,855.16x = 438,631.65 × 174,615.48
  4. Step 4: Simplify right side
    317,855.16x = 76,591,876,107.94
  5. Step 5: Solve for x
    x = 76,591,876,107.94/317,855.16
  6. Step 6: Final answer
    x = 240,964.71

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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.