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Finding the Fourth Proportional to 392,290.56, 587,919.36 and 155,504.16

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Solution

The fourth proportional to 392,290.56, 587,919.36 and 155,504.16 is: 233,051.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,290.56 : 587,919.36 = 155,504.16 : x
  2. Step 2: Convert to fraction form
    392,290.56/587,919.36 = 155,504.16/x
  3. Step 3: Cross multiply
    392,290.56x = 587,919.36 × 155,504.16
  4. Step 4: Simplify right side
    392,290.56x = 91,423,906,224.54
  5. Step 5: Solve for x
    x = 91,423,906,224.54/392,290.56
  6. Step 6: Final answer
    x = 233,051.51

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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.