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Finding the Fourth Proportional to 317,734.65, 476,601.74 and 81,077.36

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Solution

The fourth proportional to 317,734.65, 476,601.74 and 81,077.36 is: 121,615.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,734.65 : 476,601.74 = 81,077.36 : x
  2. Step 2: Convert to fraction form
    317,734.65/476,601.74 = 81,077.36/x
  3. Step 3: Cross multiply
    317,734.65x = 476,601.74 × 81,077.36
  4. Step 4: Simplify right side
    317,734.65x = 38,641,608,366.25
  5. Step 5: Solve for x
    x = 38,641,608,366.25/317,734.65
  6. Step 6: Final answer
    x = 121,615.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.