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Finding the Fourth Proportional to 295,920, 408,385.96 and 168,571.20

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Solution

The fourth proportional to 295,920, 408,385.96 and 168,571.20 is: 232,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,920 : 408,385.96 = 168,571.20 : x
  2. Step 2: Convert to fraction form
    295,920/408,385.96 = 168,571.20/x
  3. Step 3: Cross multiply
    295,920x = 408,385.96 × 168,571.20
  4. Step 4: Simplify right side
    295,920x = 68,842,111,340.35
  5. Step 5: Solve for x
    x = 68,842,111,340.35/295,920
  6. Step 6: Final answer
    x = 232,637.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.