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Finding the Fourth Proportional to 392,718.04, 589,110.87 and 108,408.64

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Solution

The fourth proportional to 392,718.04, 589,110.87 and 108,408.64 is: 162,622.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,718.04 : 589,110.87 = 108,408.64 : x
  2. Step 2: Convert to fraction form
    392,718.04/589,110.87 = 108,408.64/x
  3. Step 3: Cross multiply
    392,718.04x = 589,110.87 × 108,408.64
  4. Step 4: Simplify right side
    392,718.04x = 63,864,708,225.92
  5. Step 5: Solve for x
    x = 63,864,708,225.92/392,718.04
  6. Step 6: Final answer
    x = 162,622.29

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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.