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Finding the Fourth Proportional to 421,769.02, 632,660.86 and 155,392.42

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Solution

The fourth proportional to 421,769.02, 632,660.86 and 155,392.42 is: 233,091.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,769.02 : 632,660.86 = 155,392.42 : x
  2. Step 2: Convert to fraction form
    421,769.02/632,660.86 = 155,392.42/x
  3. Step 3: Cross multiply
    421,769.02x = 632,660.86 × 155,392.42
  4. Step 4: Simplify right side
    421,769.02x = 98,310,702,074.68
  5. Step 5: Solve for x
    x = 98,310,702,074.68/421,769.02
  6. Step 6: Final answer
    x = 233,091.33

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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.