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Finding the Fourth Proportional to 392,448.80, 587,798.40 and 303,219.20

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Solution

The fourth proportional to 392,448.80, 587,798.40 and 303,219.20 is: 454,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,448.80 : 587,798.40 = 303,219.20 : x
  2. Step 2: Convert to fraction form
    392,448.80/587,798.40 = 303,219.20/x
  3. Step 3: Cross multiply
    392,448.80x = 587,798.40 × 303,219.20
  4. Step 4: Simplify right side
    392,448.80x = 178,231,760,609.28
  5. Step 5: Solve for x
    x = 178,231,760,609.28/392,448.80
  6. Step 6: Final answer
    x = 454,152.90

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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.