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Finding the Fourth Proportional to 312,116.65, 430,584.27 and 182,989.79

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Solution

The fourth proportional to 312,116.65, 430,584.27 and 182,989.79 is: 252,445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,116.65 : 430,584.27 = 182,989.79 : x
  2. Step 2: Convert to fraction form
    312,116.65/430,584.27 = 182,989.79/x
  3. Step 3: Cross multiply
    312,116.65x = 430,584.27 × 182,989.79
  4. Step 4: Simplify right side
    312,116.65x = 78,792,525,144.60
  5. Step 5: Solve for x
    x = 78,792,525,144.60/312,116.65
  6. Step 6: Final answer
    x = 252,445.76

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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.