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Finding the Fourth Proportional to 421,789.57, 632,684.36 and 185,134.30

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Solution

The fourth proportional to 421,789.57, 632,684.36 and 185,134.30 is: 277,701.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,789.57 : 632,684.36 = 185,134.30 : x
  2. Step 2: Convert to fraction form
    421,789.57/632,684.36 = 185,134.30/x
  3. Step 3: Cross multiply
    421,789.57x = 632,684.36 × 185,134.30
  4. Step 4: Simplify right side
    421,789.57x = 117,131,576,109.55
  5. Step 5: Solve for x
    x = 117,131,576,109.55/421,789.57
  6. Step 6: Final answer
    x = 277,701.45

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Similar ratio
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1.5x scale

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.