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Finding the Fourth Proportional to 392,303.86, 588,378.28 and 107,921.04

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Solution

The fourth proportional to 392,303.86, 588,378.28 and 107,921.04 is: 161,860.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,303.86 : 588,378.28 = 107,921.04 : x
  2. Step 2: Convert to fraction form
    392,303.86/588,378.28 = 107,921.04/x
  3. Step 3: Cross multiply
    392,303.86x = 588,378.28 × 107,921.04
  4. Step 4: Simplify right side
    392,303.86x = 63,498,395,891.01
  5. Step 5: Solve for x
    x = 63,498,395,891.01/392,303.86
  6. Step 6: Final answer
    x = 161,860.24

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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.