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Finding the Fourth Proportional to 392,147.07, 588,208.25 and 111,664.32

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Solution

The fourth proportional to 392,147.07, 588,208.25 and 111,664.32 is: 167,492.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,147.07 : 588,208.25 = 111,664.32 : x
  2. Step 2: Convert to fraction form
    392,147.07/588,208.25 = 111,664.32/x
  3. Step 3: Cross multiply
    392,147.07x = 588,208.25 × 111,664.32
  4. Step 4: Simplify right side
    392,147.07x = 65,681,874,254.64
  5. Step 5: Solve for x
    x = 65,681,874,254.64/392,147.07
  6. Step 6: Final answer
    x = 167,492.96

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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.