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Finding the Fourth Proportional to 265,660.38, 398,047.59 and 190,668.15

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Solution

The fourth proportional to 265,660.38, 398,047.59 and 190,668.15 is: 285,684.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,660.38 : 398,047.59 = 190,668.15 : x
  2. Step 2: Convert to fraction form
    265,660.38/398,047.59 = 190,668.15/x
  3. Step 3: Cross multiply
    265,660.38x = 398,047.59 × 190,668.15
  4. Step 4: Simplify right side
    265,660.38x = 75,894,997,597.26
  5. Step 5: Solve for x
    x = 75,894,997,597.26/265,660.38
  6. Step 6: Final answer
    x = 285,684.29

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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.