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Finding the Fourth Proportional to 408,630.96, 613,122.72 and 155,987.28

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Solution

The fourth proportional to 408,630.96, 613,122.72 and 155,987.28 is: 234,048.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,630.96 : 613,122.72 = 155,987.28 : x
  2. Step 2: Convert to fraction form
    408,630.96/613,122.72 = 155,987.28/x
  3. Step 3: Cross multiply
    408,630.96x = 613,122.72 × 155,987.28
  4. Step 4: Simplify right side
    408,630.96x = 95,639,345,399.00
  5. Step 5: Solve for x
    x = 95,639,345,399.00/408,630.96
  6. Step 6: Final answer
    x = 234,048.21

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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.